Instruct: Classify Amazon reviews into positive or negative sentiment
Query: good

I have the Paw Path and the Sage King litter mat (the 2 best litter catching mats you can get, I think) and there is still some tracking, but way less. The pellets are hard when you step on them and must get way up into kitty's feet when using the box (the Paw Path is great for dislodging those before they get out into your house). This has NO dust- which is wonderful. They seem like really hard plastic though and I never see one looking biodegraded at all (over a year of use). If you are really having trouble with tracking and you have good litter mats in place- make sure your unit is washing correctly. If your water sensor is dirty- water won't be coming through the unit (only cleaner) and the pellets will get sticky and track everywhere.The best low track/low dust litter I've found is World's Best Cat Litter (obviously not for use in the Cat genie).