Don't buy it!

I bought this cat litter at Costco because it seemed like a great price for the amount of litter you were getting. The only pros to this is that it lasts a long time... But even that I'm not sure is such a good thing because it starts to smell really bad within a couple of days. I can't open the litter box lid without inhaling a god-awful scent. There's also a ton of dust that comes with it. It doesn't clump at all... It turns into a clay-like mess which makes it so hard to scoop out of the litter box. I've read good reviews on it before so I don't know if the formula was changed recently but I regret buying two boxes of this now. Absolutely awful!