Grubs are the larvae of different kinds of beetles; Japanese Beetle, European Chafer, or the June bug. They are “C” shaped, milky white in colour, with a brown head, and six prominent legs.
What are the damages?
Grubs feed on grass roots which will cause dead grass on your lawn that will lift like a piece of carpet if pulled. This damage begins around the end of July thru the beginning of August. First signs of damage will be in full sun, well drained locations.
Tips to eliminate grubs
The best time to control grubs is early August, when the larvae are small and actively feeding near the surface. Begin applying nematodes in August to destroy these destructive insects for one full year.
For heavy infestations you may need to repeat in September. After September or even in the spring they are much harder to control.