Skip this stuff and buy the brand name! Its super dusty, not very effective at controlling odor and I found time and time again the clumps broke when you cleaned the box. The urine smell lingered even when the box was cleaned. I poured the last of the new litter into the kitty box and attempted to blend in the new litter with brand name but the lingering smell continued enough that I dumped the entire box and refilled it with brand name litter only. Never again.. and I only have one cat.