Please don't call me crazy because I am not prepared to renovate my bathroom at this time, or because I don't want to buy a cheap toilet just because it is cheap.
I think several people on this thread do not have a concept of how many times a day a well-hydrated small child will "go", and how little actual urine is produced. Our toilets do not stink, and we flush when it is needed. When it is obvious that there is pee in the toilet, we flush.
We don't bother to flush just because someone hovered over the toilet and thought about peeing, or because a chemist *might* be able to isolate traces of pee from the water, if tested. I am not squicked out by the *idea* of pee.