I started buying Purina Tidy Cats Litter Box Deodorizer as my litter box would smell horrible before it would be time to scoop out the cat box. This is a great deodorizer for cat box odors, and it's not very expensive either. I use to use baking soda, but that didn't seem to make much of a difference. This deodorizer seems to really help control odors from the cat box and lasts until the next time I scoop the cat box. Also there's been a couple of times that I wasn't able to scoop the cat box, and it had to wait for 2 days. It was amazing that I never smelled the cat box, and I have three cats! So I know this deodorizer works for multiple cat households, just like the title says. Because of this, I don't have to waste money on expensive cat litter, and I'm still able buy the cheapest scoop-able kind of litter, without the smell! I highly recommend this cat litter to anyone tired of smelling their cat box. It's more cost effective than buying expensive litter!