World’s Best Cat Litter Health Check-In Color-Changing Additive — 12g

A simple sprinkle. A visible signal.

World’s Best Cat Litter Health Check-In Boosters adds color-changing granules to your cat’s existing litter. The granules turn blue when they detect blood in urine, helping you notice a change and contact your veterinarian.

• One 12g packet; starch-based granules.
• Works with most litter types.
• Up to three weeks of use for one cat when used as directed.
• Color changes remain visible for up to 48 hours.

How to use

1. Start with a clean box and fresh litter.
2. Sprinkle the entire pouch evenly over the litter.
3. Check daily and inspect granules while scooping. Contact your veterinarian promptly if granules turn blue.

For best results, avoid artificially colored litter and products containing bleach or “oxy” ingredients. Follow the package directions.

Know the limits

This product detects blood, not pH, and does not diagnose, treat, cure, or prevent disease. White granules do not rule out illness. If your cat seems unwell or has difficulty urinating, seek veterinary care regardless of color.