Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Wow, that dust travels

Pros:* Very, very cheap* May be healthier than clay-based* Not a bad odorCons:* Clumps are VERY difficult to remove from the sides and bottom of box* I found white dust everywhere within 5 feet of the box, including on top of the refrigerator, and on pots and pans above the refrigeratorI started using this to get away from the possibly harmful clay dust. I was pleased with how cheap it is. That helped me overlook the fact that it was a workout to get the clumps out. But after a year of use, I could no longer overlook the extremely fine white dust that was accumulating on my peanut butter jars on top of the refrigerator. I am now using World's Best, which is more expensive, but worrth it. Buy it from Amazon or PetfoodDirect.