I was not totally sold on Cat Spot litter when I saw the display at the NHRA event at Bristol Dragway but I figured what the heck I will try a couple of bags. After the first 2 week my wife and I both were sold my cats do not track the litter and my robot vac picks up the stray litter where it would never pick up the Fresh Step litter. I have also found it seems to last a bit longer than advertised. I have since set up the subscription because I like it so well. The only issue I have is I have yet to be able to setup an account because it never sends the verification email no matter what email account I use.