Article by Patrick White
I love it when I don’t have to recreate an article, and this one is full of information:
Well worth your time to read, though it is aimed to the lawn care professional.
Highlights of the article: Get Rid of Grubs
The first key is to distinguish between preventive and curative treatments, the latter being what needed during the late fall or early spring for active grubs. For active grubs, trichlorforn or carbaryl as active ingredients in your products.
Eggs are laid in midsummer and develop into full-sized grubs in the fall. “You can see them after Labor Day, they’re very obvious at that point,” says Davis. At that point, the grubs will be within the top 2.5 to 3 inches in the rootzone.