Raccoons can do a lot of damage in crawl spaces. Here is a picture from the crawl space of a house in Bencia California. The home was located along the side of a drainage ditch that was used by all kinds of wildlife. The home had a deck in the back and a large opening under the deck that lead right into the crawl space. The New owner of the home had called me because he smelled a dead animal smell coming from the crawl space. I arrived at the site and inspected the home for possible entry points of wild animals and found the large opening. I informed the home owner that I would first like to catch the animals that are most likely living under the home before I go under to look for the dead animal. I set 2 traps and the next morning I caught 2 raccoons. I ended up finding 2 more dead raccoons under the home and all of this damage that they and possibly other animals had done to the duct work under the home, as well as large amounts of feces left by the intruders.