Open areas free of trees and shrubs are preferred and moist soil is favored over dry soil. This year egg laying is likely to be concentrated in watered lawns since most unirrigated lawn areas are dry. The ultimate irony - in most years highly managed turfs are more likely to get hit with grubs. Eggs will start hatching the first of August. Damage will usually occur in August through October.
Grubs feed on grass roots until the grass dries out and dies.
The turf can easily be pulled back like a carpet. Turf can survive some feeding. Less heavily watered turf should be scouted for grubs in early August. Peel back the grass. Just a couple grubs per square foot are not a problem to an otherwise healthy lawn.