CheckUp Health Indicator Color-Changing Odor Control Non-Clumping Crystal Cat Litter, 6-lb bag

Silica Gel.

1. Fill a clean, dry litter box with CheckUp Health Indicator Cat Litter. Use CheckUp Litter alone. Do not mix with regular litter.

2. Allow your cat to urinate directly onto the litter.

3. Observe the color change and compare it with the guide on the package.

4. For further analysis, use Kit4Cat Hydrophobic Sand to collect a urine sample or the CheckUp kit for at-home testing.