misskitty, I had a squirrel problem last year. The leave their nests mid-morning and won't return until evening usually. Try to block their entrance while they're gone. Then mix Tabasco sauce(one part) with water (2 parts) in a squirt bottle and spray the areas where they were. I paid a small fortune for other squirrel repellants that didn't work and came across this recipe online. It worked like a charm and it won't harm the squirrels.