Amazon.com : Creative Science Nosorb Non-Absorbent Cat Litter | 6 oz | Easily Collect Urine Samples from Cats : Pet Supplies
Fresh Step 14 Lb. High Absorbent Cat Litter - Bliffert Lumber and Hardware
Paws & Claws Unscented Non-Clumping Clay Cat Litter, 50 lb. Bag at Tractor Supply Co.
Amazon.com : PawCheck Cat Litter for Urine Collection - Reusable and Non-Absorbent Cat Urine Collection Home Kit Intended to Monitor Cat Health : Pet Supplies
So Phresh Pine Pellet Non-Clumping Cat Litter, 40 lbs. | Petco
Collecting a Urine Sample at Home - Feline Friendly Care