Keep your RV or boat's black and grey water tanks odor-free and clog-free with Camco's enzymatic TST Blue formula. Each 4 oz bottle treats a 40-gallon tank for up to 7 days, dissolving waste and tissue while cleaning level sensors for more accurate readings. This 8-count pack gives you a full season's supply for weekend warriors and plenty of coverage for full-timers making frequent dump runs.
Unlike older formaldehyde-based treatments, Camco TST Blue relies on a concentrated enzyme blend to liquefy solid waste and break down toilet tissue. The result is a free-flowing tank that dumps cleanly, sensors that read accurately, and none of the environmental or health concerns tied to formaldehyde chemistry.
The blue dye formula also provides a visual cue that treatment is active in the tank -- a useful confidence check before you head out on the road. The liquid concentrate begins working immediately on contact with waste and water, so there is no waiting period before you can use the toilet normally.
Enzyme formula liquefies solid waste and dissolves tissue quickly, preventing the solid buildup that causes clogs and failed sensor readings.
Breaks down the coating on holding tank level sensors so your monitor panel displays accurate readings, not false "full" warnings.
Attacks odor at the source by digesting the organic matter that produces foul gas, rather than just masking smells with fragrance.
100% biodegradable and free of formaldehyde. Safe for septic systems and approved for disposal at standard RV dump stations.
Getting the dosage right ensures effective treatment without waste. Use these guidelines as your starting point and adjust for conditions.
The enzyme formula remains effective across a wide range of temperatures, from cold-weather camping to summer desert trips. The one hard limit: do not allow the product itself to freeze. Store bottles above 32 deg F (0 deg C) to preserve enzyme viability. If a bottle does freeze, thaw it fully before use and shake well -- effectiveness may be partially reduced.