toilets are not simiar to household toilets. They are regular marine
toilets with the pumping process electrified. So they are not that much different. Most of them will macerate the waste before it's pumped out, and I think that should tend to reduce the incidence of clogs. Both manual and electric marine toilets CAN handle a small amount of toilet paper -- you just have to be very careful.
I have been using one electric toilet on board my boat for three years. Knock on wood, it has never clogged, although I've had a variety of other problems with it. I like it enough that I just converted my forward heads to electric, so now both toilets on board are electric.
I did have a horrible clog with one manual toilet on board which substantially spoiled a week of my summer cruise
two years ago. Would the electric have clogged under the same circumstances? I can't be sure, but electric maceration must surely reduce the likelihood of clogs.
Do I recommend electric toilets on board? Yes. My experience may not be very typical -- my toilets are all Jabsco
. Both manual and electric have given me a lot of trouble. I tried but failed to convert to a different type, but due to access beneath the floor in my heads I had to stick with Jabsco
. Altogether the electric Jabsco is much better than the manual one.
One disadvantage of the manual one was that it required a huge amount of effort to flush. Perhaps because I have quite high anti-siphon loops. So a big advantage of the electric is that, not only are you spared the bicep-burning labor of flushing
, people are much more likely to flush all the way through with plenty of clean sea water
, which prevents a number of problems in itself.
But on my last boat I had a non-Jabsco manual toilet (can't remember the type), and it was quite acceptable. The boat was smaller and the anti-siphon loop shorter; that probably played a role. But that toilet had a lever, rather than just a plunger like that Jabsco. That probably also played a role in lower effort and better efficiency.