My coworker recently fought off a squirrel infestation in his attic. Apparently they had chewed a hole through the facia near his roof and set up shop. He looked into an exterminator but they wanted $100.00/squirrel up to 12 squirrels, after that they were free. Instead he bought 5 no-kill cages off ebay and now 32 squirrels, 4 racoons, 2 possum and 2 neighbors cats later his problem is gone and he was able to reboard the roof. The funny thing is that squirrels, like some other animals, can find their way "home" even as far as 10 miles away so he would load up his car and bring them to work to release out back.