We have about 4 trees in the yard of the new house and 3 or 4 around the garden we haven't noticed any fleas. Sounds like he had a squirrel or a rabbit that took up residence there and made a flea deposit. People just don't realize how many of these wild critters are infested with fleas! Just something we don't really think about. We have a old house where I have my weed room on the back porch. Rabbits loved to go under the house and skunks loved it to. We eliminated the skunks but still had a flea problem. Sprayed topside to keep from getting some disease and still had a problem. Finally threw a bug canister under the house and that knocked them out. Rabbits still go under there but we haven't had a flea problem in years. I guess they just got a nest started and we had to break the cycle. Ranchmama Okie zone 7a ******************** ----- Original Message ----- From: "Byron" <byronbromley@tellink.net> > > He also noted that there were many fleas around a black walnut.