can anyone give me a brief lifecycle schedule on grubs? it is my understanding, but i am not an "expert" that it works like this: the grubs hatch in late summer, feed, then go deep below the surface where they spend the winter. in late spring, they surface(without doing damage) and leave the lawn, the beatle lays its eggs in early summer, and the cycle starts again. this is what i was told by a distributor. is this how it works? if not, how then?