My cat was a naughty carpet urinater for months, no matter what I tried. If any clothes were left on the floor, it was a guarantee that he'd peed on them. He nearly ruined my carpets. I used repellant sprays, treats when he used the litter box, switched the litter brands constantly; nothing worked. I was worried maybe he had some kind of UTI, but the vet never found anything wrong.
I decided after much research to try PrettyLitter. I've used it for about two months now, and I have not seen him pee outside of the litter box since. One of my cats is long haired and it does stick to his paws a bit, but I'll happily deal with the minor tracking over the constant cat urine smell in my room! I'm very pleased with the product based on my experience, and I recommend it to anyone with cats.
Bottom Line: Yes, I would recommend this to a friend