As long as it's operated according to directions
the VacuFlush is no more or less prone to clogging than any other toilet. "According to directions" means complete flushing...leaving your foot on the pedal for at least 3 full seconds after the bowl is empty--longer and with plenty of water added to the bowl before use following solids and paper--to put enough flush water down it to rinse out of the system, especially the vacuum pump...using limited amounts of TP at one time, and only the right kind of TP--the fast dissolving cheap stuff, never premium brands. And, of course, ONLY waste and TP, nothing else. My book includes advice for maintaining the system, which toilet paper can be used (you don't have to buy "marine/rv") and how to prevent guests from clogging up a toilet...among other things.
