I just love the Petsafe blue crystal litter 2-pack I use with my Petsafe scoop-free self cleaning litter box! With 3 cats I really was tired of scooping every single day with the clay litter so these litter crystals are great!  My cats took the change in stride and now my room doesn’t smell bad anymore because the crystals absorb the urine quite effectively! The 2 pack lasted 3 weeks for my 3 cats so I’m super happy with the overall performance of this product and will be buying more!