In the last 10 years, the amount of European chafer damage to home lawns in southern Michigan has steadily decreased to the point where it is unusual now to find populations high enough to damage turf. Two different types of chemicals are used at different times of the year for different targets, preventives and curatives. Mow lawns immediately before applying an insecticide for grubs to remove weed flowers and protect bees. Current research also shows that watering with 0.5 inches of irrigation immediately after the application is essential to get effective results from these insecticides. Chlorantraniliprole applied in April will not work on spring grubs that are already present when it is applied. Use the right rate/amount of product. April 1, 2014. Curatives are used in the spring to target adult grubs. … One is the chemical approach. However, that is ancient history now, and there are three reasons why the Milky Spore product which can be purchased at garden centers may not be appropriate for a home lawn treatment: Although Japanese beetles have been found near you in Petoskey, it is more likely that people in your area will have June beetle grubs or European chafer grubs. Examples of products that contain these chemicals include Sevin® and Dylox®. There are two chemicals, carbaryl and trichlorfon, that are considered curative treatments. You can measure how much irrigation is applied by putting out several coffee cups in your lawn and run the irrigation until they fill to a half-inch level above the bottom. By the end of October, they are fully grown. Carefully check the label for ingredients. Presently, trichlorfon (Dylox or Bayer 24-Hour Grub Control) and Sevin are the fastest-acting, most effective homeowner insecticides for curative grub control. J. Econ. The best alternative strategy to avoid grub damage is to improve your turf management practices to establish a dense root system in your lawn. These products are used to prevent future grub problems, not to control the grubs present in the lawn in the spring. They will not work on grubs found in the lawn from the middle of October through the middle of May. I went to the garden store and picked up some bayer 24 hour grub killer plus with dylox. There is one insecticide product in a different chemical class that will give a similar level of grub control: chlorantraniliprole (Acelepryn). It rescues and protects lawns and turf from grubs and certain other insects that feed on them. Visit the Gardening in Michigan website to find a series of Smart Gardening bulletins that include one on fertilizer basics and mowing high for grub and weed control. Look on the Internet for ‘Heteromask,’ ‘Nemasys G’ or Buglogical Control Systems. If the need should arise to use a curative compound, make sure to keep the infested lawn watered and fertilized and treat the area again with a preventive application the next summer or the problem will likely reoccur in the fall or the following spring. I will put grubex down next spring as a preventer, I just needed something to kill the grubs now. Make sure they are alive when you when get them. However, when applied in June or July they provide excellent protection against the next generation of grubs. I received this email question about alternative grub control insecticides. Research tests over the last 25 years have clearly shown that watering immediately after application helps to obtain good results. David Smitley, Terry Davis and Erica Hotchkiss, Michigan State University, Department of Entomology - This article was published by Michigan State University Extension. Scotts GrubEx kills 25% more grub types versus original Grubex. For quick kill now, Dylox (trichlorfon) is considered most effective with Sevin (carbaryl) as second. The milky spore pathogen may not be as virulent to Japanese grubs now as it was in the 1940s during the. This is not true. When watered properly, this product can even penetrate … Apply chlorantraniliprole early (in April or May) for summer and fall grub control. Dave Smitley, Michigan State University Extension, Department of Entomology - European chafer grubs may be found in all locations in Michigan’s Lower Peninsula and in much of the Upper Peninsula. Active … Dylox 420 SL Insecticide treats surface feeding insects on lawns, landscape and recreational turf, such as golf courses. The standard, and highly effective, grub control insecticides are products that contain imidacloprid, clothianidin or thiomethoxam. Products containing imidacloprid, thiamethoxam, clothianidin or chlorantraniloprole will not control grubs in the spring. A third concern is the rate at which the insecticide is applied. Insecticides used for grubs can be separated into two groups based on how they work: preventive chemicals and curative chemicals. More research is needed on this, but it could cause problems for native bees or have long-term health effects on honey bees or bumble bees. In addition, grub control products that contain the active ingredient chlorantraniliprole are safe for bees, even when weed flowers are sprayed. Have there been any studies done on its effectiveness? Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. Here’s how to choose and use the right one for your lawn. Chemical Action and Usages: Dylox is an organophosphate insecticide in a granular form for use on lawns to control mole crickets, sod webworms, cutworms, grubs and other listed insects in turf. A half-inch of irrigation is when lawn sprinklers are run until a container like a coffee mug, or several mugs, fills to a level 0.5 inches up from the bottom of the cup. Before discussing alternative management strategies for grubs, it is important to understand that if grubs and turf damage are discovered in April, the only insecticides that will be effective in April are carbaryl (Sevin) and trichlorfon (Dylox). Weeds that flower again after mowing are much safer than weed flowers that were sprayed directly with insecticide, but some of the insecticide is absorbed by the roots and will move into the pollen and nectar. Homeowners who have just planted some new grass to fill in spots in an existing lawn that have been damaged by grubs may wonder how long they must wait till they can safely put down a grub killer, such as GrubEx… The 4-H Name and Emblem have special protections from Congress, protected by code 18 USC 707. mowing your yard with the mower on the highest setting. Make sure to irrigate the lawn with at least. Dylox 6.2 works by both contact and ingestion. Dylox (Active ingredient: Trichlorfon) Widely used by professionals, Dylox kills grubs after they are in their third instar. Be sure the problem is grubs. Bayer Grub Control vs. Grub Killer Plus. To activate Dylox you must immediately water the product into the soil with at least 1/2 to 1 inch of water. The bacterium in this product will only infect Japanese beetles and not any other species of grubs, while the most damaging grub to Michigan lawns is the European chafer. Some of these products come in a granular formulation that is applied with a fertilizer spreader or some products are designed to be mixed with water and sprayed. Do not use preventive compounds such as clothianidin, thiamethoxam or imidacloprid now. Always wear rubber gloves and rubber boots when applying insecticides to turfgrass. To have a digest of information delivered straight to your email inbox, visit https://extension.msu.edu/newsletters. Chlorantraniliprole can be applied as early as April and up to mid-July. They are short-lived compounds that kill all life stages of grubs. The first two are Heterorhabditis nematode products and the third a business that sells Heterorhabditis nematodes. There was a product available in years past from Spectrum that contained imidacloprid, but I did not see any in my visits the last two years (2016 and 2017). It will take 10-14 days for the grubs to begin dying after the insecticide is applied. Mowing prior to making the application will avoid this problem by removing the flowers. MSU is an affirmative-action, equal-opportunity employer, committed to achieving excellence through a diverse workforce and inclusive culture that encourages all people to reach their full potential. An online search indicates there are other products that will be available at other stores. It is … You can find my answer below. Wisconsin, Minnesota and Iowa have now joined the club of Midwest states with lots of Japanese beetles, and they have been found in isolated locations as far west as Colorado. In the last 10 years, the amount of European chafer damage to home lawns in … The 4-H Name and Emblem have special protections from Congress, protected by code 18 USC 707. setting your lawn mower at the highest clipping height, returning grass clippings and chopped leaves to the lawn. We don’t seem to be getting as many calls about lawns damaged by Japanese beetle grubs in the southern half of the Lower Peninsula, south of Lansing, but we are getting more calls from the northern Lower Peninsula as Japanese beetles continue to spread northward. However, even trichlorfon should not be evaluated for at least five days after application (assuming it rains or irrigation was applied), and carbaryl may need three to four weeks to be effective. & grubGONE! Japanese beetle grubs also feed on turf roots in home lawns, but they are not usually as much of a problem on home lawns as European chafers can be. There are many products available, some with the same active ingredients. A lawn should be mowed at 3 to 4 inches in height and properly fertilized for maximum root growth. One of the most common questions we get from late Spring … There are no scientific studies conducted at any university that I know of where the Milky Spore product that is now available provided adequate grub control. To kill grubs in the spring or fall, use carbaryl or trichlorfon. Protecting bees and other pollinators. This also moves the chemical off the grass and will make the yard safe for children, pets and wildlife after the yard is dry. Make a regular practice of mowing your yard with the mower on the highest setting (3.5-4 inches). They are preventive products that work very well on newly hatched grubs present in July, but do not work well for large grubs found from September to May. I found five to nine different products at each store. Consider carefully whether it would be best to wait and apply a preventive later. These active ingredients can be toxic to bees if the bees visit flowers that were recently sprayed. Our research indicates they will kill 20-80% of grubs when applied in September or 20-55% when applied in late October. It kills 25% more grub types vs. original GrubEx. Michigan State University Extension programs and materials are open to all without regard to race, color, national origin, gender, gender identity, religion, age, height, weight, disability, political beliefs, sexual orientation, marital status, family status or veteran status. and D.A. Michigan State University Extension programs and materials are open to all without regard to race, color, national origin, gender, gender identity, religion, age, height, weight, disability, political beliefs, sexual orientation, marital status, family status or veteran status. I thought others may have the same question. It is important to realize that healthy turf, supported by frequent rain or irrigation, can support a grub population of five or more grubs per square foot with no visible turf damage. If you confirmed grub damage the previous fall or spring, meaning you found lots of grubs, then you may want to use a preventive insecticide for one or two years to build a more dense turf that will be tolerant of grubs. The profusion of different products can be rather mystifying. The Bayer 24 Hour Grub Killer contains DYLOX… Lawns with a large, dense root system are much less likely to be damaged by grubs, and it is much more difficult for skunks and raccoons to dig and turn-over turf with a healthy root system. Annual bluegrass weevils (larvae and adult), armyworms, chinch bugs, cutworms, sod webworms, white grubs. Use specified dosage of DYLOX 420 SL … 1995. You don’t have to wait until your lawn becomes infested with grubs before you apply a grub killer, you can always use a… Sometimes the best offense is the best defense. Japanese beetles and European chafers lay most of their eggs in July, but Japanese beetles continue laying eggs into August. Also, irrigate your lawn immediately before and after applying the nematodes so as many as possible will make it into the soil. The larvae of both species look almost identical. Check the bag or bottle to determine what active ingredient the product contains. Our research has indicated that carbaryl has been a little more effective on European chafer grubs than trichlorfon. Prevents lawn damage: use … Check out the MSU Turfgrass Management - Golf Course Certificate Program! The product’s effects lasts for up to four months. *What is 0.5 inches of irrigation? Dylox is one of the more potent and toxic insecticides, and it's not labeled for use on edibles. So, if you need to apply the preventive insecticide BEFORE the grubs are there, how do you know if you need to use an insecticide or not? If applied too late, preventative products may not be effective as they work best on small grubs. Before discussing alternative management strategies for grubs, it is important to understand that if grubs and turf damage are discovered in April, the only insecticides that will be effective in April are carbaryl (Sevin) and trichlorfon (Dylox). The outbreak phase where turf damage is common may last five to 10 years. Preventive products are the most effective. These all look similar and feed on the tender roots of turf. Several species of beetle larvae are categorized as white grubs. Easily apply with a Scotts broadcast, drop, handheld, or Wizz … Be sure the problem is grubs. Japanese beetles like to lay their eggs on irrigated turf like golf courses, athletic fields and highly maintained lawns. Alternatives: Synthetic Chemical Inhibitors - Preventative Curative Control •Organophosphates - Dylox® (Bayer has voluntarily canceled its production of most products containing the chemical), Diazinon® (off residential market) and ... (Acelepryn® & GrubEx … MSU is an affirmative-action, equal-opportunity employer. If there is nothing flowering in the lawn, there is nothing in it that would attract bees. If rub worms are already coming for the lush lawn, using a grub worm preventer like Scotts GrubEx Killer and Preventer will keep them at bay. DYLOX 420 SL Turf and Ornamental Insecticide is a soluble concentrate, which dissolves readily in water and is suitable for use in all power-operated ground sprayers. Kills on contact: active ingredient Dylox kills grubs on contact. Do not use products containing ONLY lambda-cyhalothrin, gamma-cyhalothrin, bifenthrin, deltamethrin, cyfluthrin or permethrin for any phase of grub control. After irrigation or rainfall, grub control is established in as little as 24 hours and penetrates thatch up to ½ inch thick. Michael WillsonWillson's Garden CenterPetoskey, MI 49770. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. The BAYER advanced 24 hour Grub Control contains a chemical called DYLOX that is known to eliminate pesky insects and grubs within a maximum period of 24 hours. This information is for educational purposes only. This time of year (late summer and fall), only curative products can be used to effectively control grub populations. For more information, visit https://extension.msu.edu. Use them in June or July to control grubs that would be damaging turf in the fall. However, if the grub population is high or if there is a history of damage in an area, it may be necessary to consider using an insecticide for grub control. By the time damage is … This material is based upon work supported by the USDA and the National Institute of Food and Agriculture award number(s) 2014-70006-22498. Water the lawn immediately after applying the insecticide. These two insecticides are the only options if high numbers of grubs are found in the fall and in spring before early May. Do not apply any curative compounds in the spring after May 15 as grubs stop feeding in late May as they prepare to pupate. Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Time for me to put down my grub control but in the process I found out some key important information. There are also products for sale that list grubs on the label that do NOT work for grubs. However, Japanese beetles could become common in Petoskey over the next 10 years. Lawn sprinklers can be used if you do not have an irrigation system. A garden center owner asks about alternatives to standard grub control insecticides. Healthy turf with a few grubs may not need an insecticide. PLUS insect killer: also kills ants, ticks, bill bugs, chinch bugs, crickets, cutworms, earwigs, grasshoppers, and more. How Late Can I Put Down Grub Control? These products work well for above-ground feeding insects that live on the grass leaves or soil surface, but not for insects that feed on the roots. However, for low-maintenance lawns, even if the turf is not killed from grub feeding, the thinned and weakened turf may be prone to weeds and drought stress. You can do this by putting a pinch of nematodes in a glass of water at room temperature for 10 minutes and check to see if they are wiggling. Use Scotts GrubEx annually … Some people may want to consider a one-time treatment with a nematode that infects grubs: Heterorhabditis bacteriophora. There is little benefit to exceeding this rate, and doing so is also illegal. The eggs of both species hatch about 10 days after they are laid. Triazicide will not control grubs. It contains only lambda-cyhalothrin or gamma-cyhalothrin. There is an erroneous philosophy being perpetuated that because we have European chafers and Japanese beetles in the area, it is necessary to treat every year or your lawn will be damaged by grubs. Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Our results so far agree with the results of a test conducted a number of years ago in Kentucky by C.T. There is another active ingredient in some insecticides called chlorantraniliprole that will also work in preventing grub problems, but it is less water soluble than the other preventive compounds mentioned above, so it can be applied any time after the grass turns green in the spring. Both come in a ready to use granular formular that can be put out with a hand or push … Grub Sprays vs. Granules. In Canada, it is a problem in Ontario and Vancouver, so Washington State is on the lookout for it also. May 22, 2020. According to Cornell University, the milky spore organism, Paenibacillus popilliae, was the focus of a huge Japanese beetle biocontrol program 60 to 70 years ago, with over 100 tons of spore powder distributed throughout Pennsylvania, Ohio and surrounding states where Japanese beetle occurred at the time. To have a digest of information delivered straight to your email inbox, visit https://extension.msu.edu/newsletters. There are several products on the market that contain a combination of one of the preventive compounds and one of the above listed insecticides that “do not work on grubs.” The preventive ingredient will make it an effective choice for grub control. Check out the MSU Turfgrass Management - Golf Course Certificate Program! If you have treated for several years and you do not see evidence of grubs in your lawn or in the neighbor’s lawn, it may be time to stop treating. Finally, avoid spray drift or granular spreader drift to flower beds when applying thiamethoxam, imidacloprid, clothianidin or any insecticide for grubs other than chlorantraniliprole. vs. MSU is an affirmative-action, equal-opportunity employer. These products do not work as well (maybe 50 percent control) as standard products applied in spring or summer to prevent grub damage the next fall and spring. Check out the MSU Sports & Commercial Turf Management Certificate Program! One trichlorfon product has “24 Hour Grub Control” in its name and would seem to indicate that it will kill grubs in 24 hours. ... GrubEx or Dylox… This is a highly effective systemic insecticide that kills the target pests by both contact and ingestion. This chemical consistently reduced grub numbers by about 65-80% and research has shown that applications made before June are more efficacious than June or July application. Not all the grub control products on store shelves will be effective this spring. The main ingredient is dylox … Unfortunately, the Milky Spore product you asked about did not provide any grub control in the first year of a test we are conducting at Old Channel Trail Golf Course near Ludington, Mich. We plan to continue this test for two more years. This article was published by Michigan State University Extension. Scotts GrubEx Grub Killer and Preventer . Scotts GrubEx vs Bayer Grub Killer Plus. Finding one or two grubs does not indicate you need to apply a grub control product. To contact an expert in your area, visit https://extension.msu.edu/experts, or call 888-MSUE4MI (888-678-3464). To contact an expert in your area, visit https://extension.msu.edu/experts, or call 888-MSUE4MI (888-678-3464). I went to several of the local lawn and garden centers in the Lansing, Michigan, area to see what kinds of products are available that specifically claim they will work to control grubs. Store insecticide products in a locked cabinet not accessible to children. Check the active ingredients. If you are applying a product containing clothianidin, thiamethoxam or imidacloprid, the lawn should be mowed prior to the application so that no weeds are flowering in the lawn when the insecticide is applied. Unfortunately, there are not any biological control products that you can purchase at the garden center that will give the same level of control as the standard insecticide products. Preventive controls include the neonicotinoids and chlorantraniliprole, but the timing for each approach is very different.The label directions for most neonicotinoids (products containing chlothianidin, imidacloprid, or thiamethoxam) indicate they should be applied \"when females are laying eggs\". Lack of efficacy of in-vivo and putatively in-vitro produced Paenibacillus popilliae against field populations of Japanese beetle (Coleoptera: Scarabaeidae) grubs in Kentucky. Granular vs Liquid Grub Killer; Grub killer vs grub preventer; ... GrubEx is made using the active ingredient called chlorantraniliprole. Redmond, C.T. The grubs feed from the beginning of August until late October. At one garden center a clerk showed us two products, one containing only permethrin and one containing only bifenthrin, when we asked for products to control grubs. In fact, most well-maintained lawns do not have visible damage from grubs. Our customers are looking for alternatives to the chemical options (especially with the publicity concerning honeybees) and I am hoping to help them find some. European chafers are generally found in drier turf and their population levels will fluctuate depending upon how wet or dry the weather was the previous summer. Grub damage may appear in home lawns from mid-September to November or from March to early May. MSU is an affirmative-action, equal-opportunity employer, committed to achieving excellence through a diverse workforce and inclusive culture that encourages all people to reach their full potential. You can do this by following Michigan State University Extension’s recommendations of setting your lawn mower at the highest clipping height (3-4 inches); applying at least 2.5 pounds of actual N per 1,000 square feet of lawn per year using a slow-release fertilizer several times each year; watering during dry periods; and returning grass clippings and chopped leaves to the lawn instead of collecting and removing them. As a professional lawn care service we get a lot of questions about lawn maintenance. Prevent grubs from damaging your lawn with Scotts GrubEx1 Season Long Grub Killer. Now it has spread throughout Ohio, Michigan (all of the Lower and half of the Upper Peninsula), northern Indiana and into eastern Illinois. Do not use products containing ONLY lambda-cyhalothrin, gamma-cyhalothrin, bifenthrin, deltamethrin, cyfluthrin or permethrin for grub control. We have had questions from our customers at our garden center here in Petoskey about the Milky Spore granular product by St. Gabriel Laboratories and I am having a hard time getting the facts. Both Bayer Advanced Grub Control and Bayer Advanced Grub Killer Plus are marketed to those battling with turf-destroying white grubs. 88: 846-854. They spend the winter as large grubs (0.75 inches long) some 2-6 inches below the soil surface. Before doing anything, it is important to make sure the problem is grubs. It kills about 50 … When the ground warms up in spring, they resume feeding and can cause damage from the time the grass turns green until they pupate in mid-May. Entomol. The critical issue with any grub control product is the active ingredient. Also, in the last two years several products have become available in an attach-to-hose bottle and are automatically mixed with water when applied. This information is for educational purposes only. Use Dylox 6.2 Granular Insecticide … Dylox … There are different recommended timings for application depending on the active ingredient. The second major concern is to make sure the insecticide is thoroughly watered into the ground with at least a half-inch of irrigation or rain immediately after the chemical is applied. beetleGONE! Is the grub population here in northern Michigan likely to be other than from the Japanese beetle? As with the preventive products, lawns should be mowed immediately before applying carbaryl or trichlorfon to protect bees. If you order or purchase a live nematode product for grubs, make sure you buy a Heterorhabditis nematode and not a Steinernema or another type of nematode. Applying them now will allow some of the chemical to leach through the turf or break down to the point that not enough insecticide will be there in July to control grubs. The product’s effects lasts for up to four months. By the time I did further research and bought the BioAdvanced Grub Killer (due to having It was also reported in Wisconsin in 2013. For more information, visit https://extension.msu.edu. GrubEx with the active ingredient chlorantraniliprole is used for preventive soil treatment. If applied in early spring, the pesticide may move through the soil or partially degrade by the time the grubs hatch in late July. There is a widely sold trade name called Triazicide from Spectrum that lists grubs on the label and states it will control insects above or below ground and has a picture of a grub on the front of the bag. The nematodes may not kill as many grubs as the standard insecticide products, but they persist a long time and may even infect grubs for several years after they are applied. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. Regionally, European chafers are a much bigger problem than they used to be. Below is a short list of products now being sold for grub control as of May 22, 2020, in stores checked in the Mid-Michigan area. The active ingredient, drop, handheld, or Wizz … how late can i Put Down grub control.... Care service we get from late spring … grub Sprays vs. Granules use the right for... Get effective results from these insecticides or from March to early may in lawns an! About alternative grub control product is the grub population here in northern Michigan to... Are products that will be available at other stores: preventive chemicals and curative chemicals grubs begin! 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Year for different targets, preventives and curatives best to wait and apply a grub.! With water when applied in April will not work on grubs found in without. Needed something to kill the grubs now as it was in the spring any grub control on. It also an attach-to-hose bottle and are automatically mixed with water when applied more effective on chafer... Feed on the lookout for it also, cutworms, sod webworms, white.. At least 1/2 to 1 inch of water at other stores more detailed information, on this to! Chlorantraniliprole applied in June or July they provide excellent protection against the 10... Petoskey over the last two years several products have become available in an attach-to-hose bottle and are mixed...
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