Fill your clean litter box with 3-4 inches of Fresh Step Scoopable Clumping litter. For best results, do not mix with non-clumping cat litterThe litter quickly forms a clump around liquid waste. Remove clumps and solids daily and dispose of in trash. Do not flush. The rest of the litter stays freshAdd more Fresh Step Scoopable Clumping litter to refresh your litter box each time you scoop. Maintain level of litter at 3-4 inches. Once a month empty entire litter box. Dispose of contents in the trashToxoplasmosis Warning: Fresh Step would like to remind their customers, especially pregnant women and immuno-suppressed persons, that cat feces can sometimes transmit a disease called toxoplasmosis. Therefore always remember to wash hands thoroughly after handling used cat litter. For further information, consult your physician. Unused cat litter poses no toxoplasmosis threat.