This summertime, culling will begin in earnest below on the landmass. " Red squirrel conservation is thriving, because we've obtained evidence that we can eliminate gray squirrels from the landscape," he says. Economically, Eastern grey squirrels set you back property owners repairs as a result of digging up of gardens and also yards, chewing via electric wires, eaves and roof shingles, and nesting in roofings, attics, and smokeshafts.