We have a saniflo. We were out, and our babysitter (who isn't familiar with saniflos) was in the bathroom and suddenly she said water was flooding out of the toilet - she said she had heard a loud noise that went on for ages, and when it stopped, water stopped flooding out. We got home and cleared 5 buckets of water from the bathroom floor. I looked at the saniflo and it was dry and looked ok from the outside. Later, when cleaning, I found an apple core, half chewed up, sitting in the pan. I'm pretty sure this would have blocked it and caused the flood, and in fact, we got loads of towels ready and flushed, and there was no leak. Does it sound like this is probably the cause and we should be ok now? (babysitter went AWOL so we can't ask her if she flushed the apple core!)