See the observation of Dr. Flea, a fellow college: Pet owners are often amazed at the number of fleas caught in the trap. Every flea trapped is one less flea biting people in the home and one less feeding on your dog or cat. I have found "myFleaTrap" to be an effective and environmentally safe addition to a complete flea control program. Dr. Michael Dryden DVM, M.S., PhD www.drmichaeldryden.com