Sealand TDX-C Treatment Chemical is a biodegradable formula made specifically for SeaLand SanX and Mansfield TDX waste treatment systems. Add this chemical to marine and RV holding tanks to break down waste and tissue. Each gallon will handle four treatment cycles.
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Tank Cleaners & Treatments
Really Kills the Head's Odor
After each pump out of my Sealand Traveler head, I pour in about 1/2 cup of this stuff with some water. The head with occasional use, is then odor free for at least a month. If things start ripening up, I just add another 1/2 cup and it kill all the odor for another month, or until I get to the pump-out station.