We have two cats that share one box - yes, they should have two but they just both use them so we keep it at one lol. This is soooo much better than regular clay clumping, it has zero offensive smell (unless fresh wood shavings offend you) and seems to work great. reason for 1 star debit: It is a little hard to scoop with the scooper i have (hint: maybe offer a catalyst-specific scooper?) and it does still track on the floor. But