We got this first and it was a life-saver in our house. Casper had been thoroughly attacked by fleas and had pulled the fur of his back end and clawed and chewed himself raw in places. He was keeping everyone in the house up all night with the whining (which could be heard in the apartment above us) and the scratching (that translated as a non-stop thumping to the land-lord who lives one floor below us). I started bathing him every other day and attack the fleas in the apartment. Thankfully, Gizzy stayed off the floor most of the time, so she avoided the worst of it. Casper's one very happy dog again.