They are cute.
My effort to attract Eastern Screech Owls with a nesting box resulted in the brood below. Those are not baby owls.
Squirrels knew there was food inside and a screen is no barrier. 
A bucket with bird feed broken into.
The best way to rid your yard of unwanted squirrels is Don’t Bother Trying. After they took over my Screech Owl nesting box, I decided to trap them and donate them to Pioneer Park in Sterling. I hauled thirty-six away, below is number Eleven. (I took pictures of them all.) The number in my backyard remained constant. I know of one case where the woman removed eighty-seven with similar results. The squirrels know the necessary quota for your yard and will work to maintain that number.