Call in the Pest Conrtol Professionals!
Ann Althouse, spooked by an earlier experience of having bats invade her house, is now concerned that the place has become home to squirrels. Earlier, she asked readers if they thought if this might be the case. In an update, she responded to readers telling her how to handle such an invasion, saying that if there are squirrels in the AltHouse, she will call in professionals.
I responded:
I don't know if you have squirrels in your house. But I am with you on the question of what do about them. Of course, you should call in professionals.
Earlier this year, we had a family of skunks ensconced beneath our front porch. There was no way I was going to tangle with the crew!
(In fact, a bevy of skunks have terrorized our neighborhood, particularly the local dog population, all summer long.)
The skunks are no longer a problem at our house or in our community. Part of the reason for that happy turn of events is that I "outsourced" my skunk eradication program.
My advice to you is don't try to figure out whether you've got a squirrel problem or not. Call the professionals and let them make that determination.
(No real animals were harmed in the posting of this comment.)
By the way, my competence in any of the usual homesteading skills is so limited that I require professional help for even the most mundane of tasks. So, my advice in this matter may be worthless.
I only know that the most important tool in my arsenal for dealing with household repair and maintenance needs is the telephone.