Oh, and the best pesticide I've ever used is a homemade one consisting of baby shampoo (or lemon dish detergent), mouthwash, tobacco juice, vegetable oil and warm water mixed together in a hose end sprayer. Just overspray lawn after mowing. WHen all our neighbours used to have problems with grubs, we had the greenest front lawn on the block (don't ask about the dogs' backyard
).