I sympathize with you Justin! I had a mouse infestation that took me a couple of months to finally shut down. Depending on where you live, it might be cold at night now, so they are REALLY motivated to get indoors. Don't rule out the possibility they are coming in someplace low, and then going up through a wall to get to the attic.
I agree with PABugman about the traps, don't show any sympathy, live kill traps are the only ones worth anything.
Pardon any typos, my IPad has a mind of it's own for spelling corrections!