Steps
For Preventative treatment:
- Treat your lawn during the first two weeks of July with products containing imidacloprid or halofenozide. These chemical will poison the grubs, and kill them as they hatch. Merrit is one such product.
- Apply the product following the directions on the package.
- If you want a more organic option, then you can apply Milky Spore. This is a disease that will kill off the Japanese Beetles. You need to apply it in the Spring, Summer, and Fall for two years. This will insure that your lawn is "infected" and will remain so for at least ten years. Note that some grubs are not treatable by Milky Spore and require a Merrit application.
For curative treatment:
- Treat in the spring (from March to mid-May) or fall (Sept 1 to Nov 1) with carbaryl and trichlorfon. The grubs stop feeding in late may and curative products are no longer affective.
- Source: http://www.turf.msu.edu/grubs_spring.htm
Video
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Tips
- Obviously the size of the brown patch will determine the number of holes. You may need to experiment a little bit. Regular beer works better than lite beer, but as for brands the grubs do not seem picky.
- Japanese Beetles only lay their eggs in sunny areas.
- Merrit is only effective for three months. Resist the temptation to apply it too early.
- Not only do the grubs do damage to your lawn, but many animals feed on grubs. By allowing grubs to remain in your yard, you might find that it will increase the tendancy of skunks and raccoons to come to your yard.
Warnings
- Follow all the directions on the packages when you apply any product to your lawn.
- Make sure to add water to the product.
Things You'll Need
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