The 40221 TST Singles Toilet Treatments provide a simple, pre-measured solution for maintaining RV and marine holding tanks. Each 4 oz bottle contains a powerful formula designed to reduce odors, break down waste, and support smoother tank function. These convenient single-use bottles ensure accurate dosing every time, eliminating spills, mess, or guesswork. Ideal for travelers, RV owners, and boaters, this 8‑pack offers an easy, effective way to maintain a cleaner and fresher waste system during every trip.

Key Features

• Pre-measured 4 oz liquid bottles for hassle-free use
• Helps control and neutralize tank odors
• Breaks down waste and tissue to improve tank performance
• Designed for RV and marine holding tank systems
• Convenient single-use packaging for mess-free application

Applications

• Treating RV black water holding tanks
• Marine and boat waste system maintenance
• Travel-ready waste treatment for short or extended trips
• Odor control and waste breakdown for portable sanitation setups