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How to clean and maintrain chemical toilets

Most portable, flushable chemical toilets consist of two sections: a freshwater supply tank-incorporating the bowl, seat, and lid-and a detachable waste-holding tank. Chemicals used to deodorize and help decompose the waste must be handled with care; they are poisonous. Add them to the holding tank, following the instructions in the owner’s manual.

When the holding tank is full, detach it from the upper toilet section and empty it into a permanent toilet. In cold weather, add antifreeze to the water-supply tank.

Keep portable toilets clean with a mild, nonabrasive cleaner suitable for plastics. (Usually the lid and seat can be snapped off for cleaning.) Before storing the toilet, rinse out the holding tank with a solution of 1 cup
household bleach per gallon of water or a cleaner recommended by the manufacturer. If the holding-tank sealing valve begins to stick, lubricate it lightly with silicone spray. Replacing parts

If a bellows is pumping inadequately, replace it. Pry it out with a screwdriver, placing cardboard padding under the screwdriver blade to avoid disfiguring the toilet top. Spread a Butyl rubber sealant (PTI may be suggested) evenly around the neck and base of the new bellows before you install it. Slip the flush tube well over the neck’s barb so that it is against the angle of the tee of the bellows leg. Bending the flush tube downward slightly, press the bellows into place.

If leaks develop between the bowl and the holding tank, replace the gaskets (rubber rings that act as seals), following the instructions on a kit designed for your unit. Pry out the old gaskets with a screwdriver. Before installing new ones, clean the slot in the base of all traces of old glue with toluol methylbenzine. Take care not to scar the sealing surface; wet the replacement seals before installing them.