Doesn't work that way - you can't pretreat for an insect problem which may
or may not exist. Keep your lawn in good health and avoid over fertilizing
and over watering, both of which create environments conducive to grubs.
Monitor during the growing season and if grubs are detected in sufficient
populations, treat with a biocontrol like milky spore or nematodes.
pam - gardengal
If you are going to put a chemical down, you want something containing Merit
(Imidacloprid). GrubEx no longer contains Merit as it did in earlier
versions. It now contains halofenozide. It is also important to know when to
apply this to your lawn. It is most effective on immature larvae so you want
to apply it right before or right after the grubs hatch out of their eggs.
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