@jespah,
you dont ever wanna let a squirrel in a house. They can do real damage and can even start fires by cheing on the plastic coating on wires (certain wire coatings have a sweet taste apparently).
I wack any squirrel that gets within sight of our place. THey have a 10 acre woodlot thats about 1/4 mile away and thats there for their enjoyment, rent free. I dont want any of them furry tailed rats in my place.
Too many sad tales to relate of kids getting chewed up by a squirrel that was living in an attic space, or a squirrel that had chewed out all the insulation and caused a leak in a house, or the "electrical fire thing.
get a pellet gun, they work best in a house .