I noticed the other day while walking across my lawn that the sod moved like a rug on a tile floor. Upon closer inspection I found that I could lift up huge sections of my lawn and the soil was full of grubs. Initially I was walking across the lawn to inspect damage done by animals (Raccoon and/or possum I thought). I am assuming the animals are digging up my sod because they are after the grubs. I couldn't believe the damage done by the grubs. My entire rear yard is shot. What do I do now???? Treat it? Then rototill it and replant? Any advise will be appreciated.