Quote from Daphne in They're Playing Our Song
Daphne: This is the chance I've been waiting for. [As Daphne uses the "Dirt Scourge 2000" on Martin's chair, the water tank begins to bubble and smoke before a small explosion.] Frasier: Well, apparently the "Dirt Scourge 2000" is no match for the "Dirt Pile 1957." Daphne: Well, this is going back. On the commercial they clean all the mud off a hippopotamus.