Caution: As with any litter, veterinarians recommend changing the litter box completely at least once a month. Entire contents should be disposed of in the trash, not the toilet. sWheat Scoop does not recommend flushing the litter into a sump pump hole that has to pump the litter uphill. As you would with any litter, always wash hands thoroughly after scooping or litter box cleaning. Because cat feces can transmit parasites that cause toxoplasmosis, pregnant women and people with suppressed immune systems should avoid any litter box maintenance.