I've used both, but don't use either of them any longer.


The Sweat Scoop I liked, but the stuff stuck like cement on the bottom of my litter boxes. it was really annoying. It did track a lot as well. Other than that, it was pleasant to use.

World's Best, it's ok. Again, tracking was an issue, and I found it dusty.

I've been using crystals now for about 2 months. I need to go buy some more because my guys are fussy and everything has to be totally replaced after about 3-4 weeks. I have 8 cats and 12 litter boxes.

While the crystals I use may not get "environmentally" green, they don't create dust, and I'm not sneezy or blowing out gray crap for 8 hours after cleaning the boxes. My cats are less sneezy as well. This to me is a plus. And they are using the boxes more faithfully. Also could be because I am totally replacing everything more often. I buy MiMi crystals at Walmart, the only place I found them. They are not like sand, but larger.