We use Tidy Cats. There's a new one with Glade. I tried the one with corn & pine in it but didn't like it. Hard to sweep up, got everywhere. Haven't tried the Kirkland brand. Had three cats along in 30' RV last year. Wouldn't recommend it. They did use the cat box though. In stick house, one of the cats has started going elsewhere & I've wanted to re-home her. She was piddling on our brand new living room carpet & my only solution was to put a cat box in the living room. I suggested it as a joke & husband liked idea. Now all three cats are liking living room box best. Ugh. So ashamed.