This litter is made of inert, non-absorbent granules that let urine pool on the surface instead of soaking in, so a clean sample can be poured off for laboratory testing. It is intended for use as a urinalysis collection aid, supporting checks on hydration, kidney function, urinary tract health, and general wellness work-ups in cats. To use it, an existing litter pan is emptied and cleaned, then filled with the granules in place of regular litter. Cats readily use it as they would any other litter, so no change in litter box habit is typically needed. Once the cat urinates, the sample is poured into a suitable container for veterinary testing. The product is offered in different package formats suited to either repeated hospital use or single out-patient collection at home.