I know it doesn’t seem like it should be a mystery, but I have been toilet training my youngest forever now. It has been 18 months, which is way too long. He has been pretty good for the last 12 months or so, but still makes me wipe him (GROSS!) and does not have perfect aim yet when it comes to using the toilet for #1. (I am trying to be politically correct, but it is so hard!)
Anyway, he hits is more often than not now, but there are times when our half bath off the kitchen smells like a truck stop. Or a frat house. Or a gas station. You can insert your own worst experience in a bathroom here. But I know that when it comes out it is just barely yellow and after a few days, or sometimes even a few hours, there is a dried on bit of DARK YELLOW gunk on the bottom ledge of the toilet, near the floor, but not on it. I could not figure this out for the longest time. You may be in the same place as I am. So after a few weeks, I asked my husband, somewhat rhetorically, what this could be. Lo and behold, he actually had an answer.
When the kid pees and misses, it goes to that spot. And this is the part that eluded me. THEN THE WATER IN IT EVAPORATES, leaving the darker yellow gunk. Who knew?
All I know is that I will be so excited when everyone pees in the toilet and makes it and I don’t have to sit in pee. And since the older ones are too lazy to always lift the seat, that might be when they all move out of the house! (I have actually sat on a wet seat twice in the last month. EWWWWWW!)