I got an ad watching Youtube just now about PrettyLitter. A lightweight cat litter that supposedly can monitor the health of your cat by changing different colors if there is specific imbalances in your kitty's urine. As much as I want to believe it and pay 20 dollars a month I can't help but be skeptical. I can see where it could help me catch bladder and kidney infections early, yet at the same time I can see myself rushing my cat to the vet for expensive blood work because the litter turned blue or something only to get a false alarm. Anyone on this site ever tried PrettyLitter? I tried looking for a review but haven't found one yet.