The fatberg and my part in its downfall

In the main toilet in our house and in most toilets, there is no Saniflo. There are generally no consequences to what we flush down. None that we see. But Tom Cuddy and his staff see it.
It makes a growling noise when everything is ok. The teeth happily grinding away. But when something’s wrong, it whines, it screams. There is a slight burning smell. And then awful silence.