Try using some capsicum powder. Most of these smaller animals will get it on their paws or sniff their way around and pretty soon they will not like it. Of course it will wash away, so you might have to reapply it a few times, but the idea is to get the plants mature enough so that the animals leave them alone. You could also make a liquid solution from the pepper and spray it on the plants and entry points to the yard which might help. When I lived downtown, raccoons were a big problem with my plants so I used the capsicum a few times and they never came back.