For very occasional use, a bucket is the cheapest option, and Burnsco sells a toilet bucket with a suitably shaped seat. The next step up is a chemical toilet, and there is a range of those with removable ‘cassettes’ that make them easier to empty. But there is nothing like the convenience of a proper flush toilet.
Flush tiolets start at just over $300 for a manual flush with a hand pump and around $450 for the most basic electric flush model. A macerator pump takes care of the waste, cutting it into extremely fine pieces which can then be flushed out into the surrounding water.
Of course, there are rules about when and where you can flush human waste directly into the sea. You must be in water deeper than five metres and more than 500m from the nearest shore or marine farm if you want to flush untreated waste. For most places in
