Sandy, there are several online sources for Precor. If you put "precor flea" in you google search several sites will come up. It is recommended that in addition to spraying with the precor that you might mix it with a insecticide like Ovitrol Plus Flea Spray. This will kill the existing fleas and the Precor will break the cycle so they dont come back. This is a link that might help.

http://www.pestproducts.com/precor2000.htm