Well, I guess it's not really advice. More like a warning.
If you have a 2 year old who is being potty trained and you find him in the bathroom having removed his own training pants, the very first step is to put him on the potty.
The very next step is to check the floor for puddles.
I followed step one. I did not follow step two.
P.S. Paper towels make for easy clean-up. And my bathroom rug is in the washer as I type.