Before doing anything, it is important to make sure the problem is grubs. Active … Preventive products containing imidacloprid, thiamethoxam or clothianidin will consistently reduce 75-100% of the grubs if they are applied in June or July and if they are watered-in with 0.5 inches of irrigation immediately after application. They spend the winter as large grubs (0.75 inches long) some 2-6 inches below the soil surface. 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. 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. Do not use preventive compounds such as clothianidin, thiamethoxam or imidacloprid now. 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. However, as European chafers and Japanese beetles have spread northward, lawns and other low maintenance turf areas in much of the Lower Peninsula north of Lansing and in the eastern half of the Upper Peninsula are seeing more damage. 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. Water the lawn immediately after applying the insecticide. A single application of Scotts GrubEx stops A single application of Scotts GrubEx stops grubs all season long. There are two chemicals, carbaryl and trichlorfon, that are considered curative treatments. This material is based upon work supported by the USDA and the National Institute of Food and Agriculture award number(s) 2014-70006-22498. Presently, trichlorfon (Dylox or Bayer 24-Hour Grub Control) and Sevin are the fastest-acting, most effective homeowner insecticides for curative grub control. Sometimes the best offense is the best defense. J. Econ. GrubEx with the active ingredient chlorantraniliprole is used for preventive soil treatment. 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 two insecticides are the only options if high numbers of grubs are found in the fall and in spring before early May. 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. Some people may want to consider a one-time treatment with a nematode that infects grubs: Heterorhabditis bacteriophora. 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. Prevent grubs from damaging your lawn with Scotts GrubEx1 Season Long Grub Killer. Check out all the Grubs and insects controlled by these 2 products. For more detailed information, on this go to the Michigan State University Turf website and see the grub control bulletin posted there. The active ingredients are usually shown on the bottom right or left of the front of the bag and listed as a percent of composition. 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. 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. Both compounds work equally well on Japanese beetle grubs. 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. For more information, visit https://extension.msu.edu. 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. Triazicide will not control grubs. Use Scotts GrubEx annually … Regionally, European chafers are a much bigger problem than they used to be. Bayer Advanced Season-Long Grub Control (or Bayer Advanced Merit) - Granular, Bayer Advanced Season-Long Grub Control and Turf Revitalizer - Granular, Premium Grub Control (Do not confuse with “Premium Insect Control”), Bayer Advanced Complete Insect Killer Liquid attach-to-hose-bottle, Bayer Advanced Complete Insect Killer Granules - Granular, Bayer Advanced 24 hr Grub Killer Plus - Granular, Spectracide Triazicide Insect Killer for Lawns - Granular. Curatives are used in the spring to target adult grubs. Check for the active ingredient in a grub product. Ingredients such as carbaryl, trichlorfon or zeta-cypermethrin are curative and work on contact with grubs. 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\". Protecting bees and other pollinators. Dylox 420 SL Insecticide treats surface feeding insects on lawns, landscape and recreational turf, such as golf courses. It was also reported in Wisconsin in 2013. One is the chemical approach. By the end of October, they are fully grown. Do not use products containing ONLY lambda-cyhalothrin, gamma-cyhalothrin, bifenthrin, deltamethrin, cyfluthrin or permethrin for any phase of grub control. Japanese beetles and European chafers lay most of their eggs in July, but Japanese beetles continue laying eggs into August. 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. 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. 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… Grub damage may appear in home lawns from mid-September to November or from March to early May. Do not use products containing ONLY lambda-cyhalothrin, gamma-cyhalothrin, bifenthrin, deltamethrin, cyfluthrin or permethrin for grub control. Look on the Internet for ‘Heteromask,’ ‘Nemasys G’ or Buglogical Control Systems. The standard, and highly effective, grub control insecticides are products that contain imidacloprid, clothianidin or thiomethoxam. They can be abundant in non-irrigated home lawns if we receive frequent rain in July, but are scarce in lawns that are very dry in July and early August. 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? These products are used to prevent future grub problems, not to control the grubs present in the lawn in the spring. 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. Mow lawns immediately before applying an insecticide for grubs to remove weed flowers and protect bees. An online search indicates there are other products that will be available at other stores. 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. Several species of beetle larvae are categorized as white grubs. There is one insecticide product in a different chemical class that will give a similar level of grub control: chlorantraniliprole (Acelepryn). It is … Lawn sprinklers can be used if you do not have an irrigation system. *What is 0.5 inches of irrigation? 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. Check the bag or bottle to determine what active ingredient the product contains. The milky spore pathogen may not be as virulent to Japanese grubs now as it was in the 1940s during the. Is the grub population here in northern Michigan likely to be other than from the Japanese beetle? Products containing only these ingredients will not work for grub control because the active ingredient binds with organic material and will not move down to where the grubs are feeding. Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. Proper fertilization is important to prevent and allow the lawn to recover from grub damage. 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). David Smitley, Terry Davis and Erica Hotchkiss, Michigan State University, Department of Entomology - How Late Can I Put Down Grub Control? Annual bluegrass weevils (larvae and adult), armyworms, chinch bugs, cutworms, sod webworms, white grubs. Be sure the problem is grubs. 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. This article was published by Michigan State University Extension. Consider carefully whether it would be best to wait and apply a preventive later. Make sure to irrigate the lawn with at least. 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. 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). Scotts GrubEx kills 25% more grub types versus original Grubex. You don’t have to wait until your lawn becomes infested with grubs before you apply a grub killer, you can always use a… This information is for educational purposes only. I found five to nine different products at each store. This is a highly effective systemic insecticide that kills the target pests by both contact and ingestion. In fact, most well-maintained lawns do not have visible damage from grubs. 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. Both Bayer Advanced Grub Control and Bayer Advanced Grub Killer Plus are marketed to those battling with turf-destroying white grubs. To kill grubs in the spring or fall, use carbaryl or trichlorfon. The Bayer 24 Hour Grub Killer contains DYLOX… 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. 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. MSU is an affirmative-action, equal-opportunity employer. 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. In addition, grub control products that contain the active ingredient chlorantraniliprole are safe for bees, even when weed flowers are sprayed. 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. beetleGONE! This article was published by Michigan State University Extension. However, Japanese beetles could become common in Petoskey over the next 10 years. When watered properly, this product can even penetrate … Research tests over the last 25 years have clearly shown that watering immediately after application helps to obtain good results. Use specified dosage of DYLOX 420 SL … The outbreak phase where turf damage is common may last five to 10 years. Kills on contact: active ingredient Dylox kills grubs on contact. As a professional lawn care service we get a lot of questions about lawn maintenance. There are different recommended timings for application depending on the active ingredient. If applied in early spring, the pesticide may move through the soil or partially degrade by the time the grubs hatch in late July. 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. If there is nothing flowering in the lawn, there is nothing in it that would attract bees. The product’s effects lasts for up to four months. Two different types of chemicals are used at different times of the year for different targets, preventives and curatives. 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. Have there been any studies done on its effectiveness? European chafer grubs may be found in all locations in Michigan’s Lower Peninsula and in much of the Upper Peninsula. Time for me to put down my grub control but in the process I found out some key important information. By the time damage is … There are also products for sale that list grubs on the label that do NOT work for grubs. 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. 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. 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. This is not true. Neither of the products listed grubs on the label printed on the bag and neither of the products would have controlled grubs. 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. Grub Sprays vs. Granules. The product’s effects lasts for up to four months. 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 … 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. One of the most common questions we get from late Spring … The preventive compound chlorantraniliprole should ideally be applied in April or May to control grubs that would be damaging turf in the fall as it will take longer for the material to move to where the grubs will be feeding in July. Check out the MSU Turfgrass Management - Golf Course Certificate Program! Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. It rescues and protects lawns and turf from grubs and certain other insects that feed on them. Potter. Here’s how to choose and use the right one for your lawn. You can find my answer below. Store insecticide products in a locked cabinet not accessible to children. … Our results so far agree with the results of a test conducted a number of years ago in Kentucky by C.T. May 22, 2020. These active ingredients can be toxic to bees if the bees visit flowers that were recently sprayed. 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. Dylox is one of the more potent and toxic insecticides, and it's not labeled for use on edibles. Entomol. 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. The eggs of both species hatch about 10 days after they are laid. vs. and D.A. This time of year (late summer and fall), only curative products can be used to effectively control grub populations. 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. Finally, avoid spray drift or granular spreader drift to flower beds when applying thiamethoxam, imidacloprid, clothianidin or any insecticide for grubs other than chlorantraniliprole. 1995. I went to the garden store and picked up some bayer 24 hour grub killer plus with dylox. Dylox 6.2 Granular Insecticide Pests Controlled. 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 (Active ingredient: Trichlorfon) Widely used by professionals, Dylox kills grubs after they are in their third instar. Redmond and D.A. This information is for educational purposes only. The two most common are carbaryl, which is Sevin and trichlorfon, which is Dylox. 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. 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. Do not apply any curative compounds in the spring after May 15 as grubs stop feeding in late May as they prepare to pupate. As with the preventive products, lawns should be mowed immediately before applying carbaryl or trichlorfon to protect bees. These all look similar and feed on the tender roots of turf. Use Dylox 6.2 Granular Insecticide … A third concern is the rate at which the insecticide is applied. 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