Dogman: we had squirrels 2/3 year ago, and they are a pain in the you-know-what too. Cute yes, and I remember watching them as a kid thinking they were so fun. That's until they broken into the attic. Mind you, I'm in suburbia, not in the middle of the woods or anything. LOL
Same crazy raccoon guy that got rid of my problem this time did it last time... and he had them all out in less than a week. They have TERRIBLE fleas, so be sure you fumigate when you do finally get them out.
Also, try baiting your traps with a cracker, lots of peanut butter and half a regular marshmallow on top. The white of the marshmallow attracts them apparently. Put birdseed in the peanut butter if you have it on hand.
And if you're going to let them go... make sure it's more than 5 miles from you house or they will find their way back!
Good luck... you have my sympathy.
Steve: we laugh and say we must have a sign in our backyard saying "wildlife welcome". We get bunnies, moles, and chipmunks regularly. We had ducks nest in our yard once and lay eggs (more babies! But not in my house... LOL). Then the squirrels and raccoons in our attic. I don't know why they like us so much.