From August through October or in spring, the grass appears to wilt and turns brown in large, irregular patches. Brown areas of grass roll up easily like a carpet. Birds and animals may be digging in the lawn. Milky white grubs from 1/8 to 1 inch long, with brown heads and three pairs of legs, lie curled in the soil. Grubs are the larvae of different kinds of beetles, including Japanese and masked chafer beetles. The grubs feed on turf roots and may kill the entire lawn.
To save areas just beginning to fade, keep the soil moist but not wet.