There's a product on the market called goo-gone. It's specifically for removing adhesives. Test first in an inconspicuous area, but it should work. Rinse well afterward. ... View related article.
Bats won't roost in noisy places. You could wait until just before dusk--any sooner and the bats could fall prey to larger animals--and make some noise! Then definitely use screening material to close off their 'home'. Also, make sure they don't have any babies in your walls, or the smell with be terrible! ... View related article.
Baking soda works to get things cleaner, naturally. It's not toxic, so you could try adding about 1cup to your pet's warm bath water. Hope it helps! ... View related article.