 They like the sunny side of the home, and we use a material. Box shelter bucks have a very hard exoskeleton for materials to get through, but we use this material. It's called a micro-encapsulated material, and it sticks to the house, safe for your dogs, no odor, no fumes. Put it on with water. It's clear. You can't see it, and it lasts a long time, meaning about three months.