We were out of Nosorb (Catco), the nonabsorbent granule cat litter used to collect urine samples, and needed to collect a sample that day. We cleaned and dried a few used intravenous infusion lines, cut them into litter-size pellets, and then placed them in a clean litter box. They didn't take long to make and worked well in a pinch.
Dr. Maria D. Gonzales
San Antonio, Texas