2 new mishnayot! First, an alternative to taking a graven image to the Dead Sea - grind it off (but then the leavings become fertilizer, which would be getting benefit from it). With a parallel to improper use of that which had been consecrated, including that which emptied into the Kidron Valley (a story of King Asa), where fertilizer was less in use... Also, the story of Rabban Gamliel and the rebuke that comes his way for being in the bathhouse of Aphrodite (he has several defenses).