Next time if the H2O doesn't do it, don't be afraid to ask a doctor to IV you up. Last round thru I was home alone. Family was out of state, and I spent the last night laying in the shower floor with the water running all night (thank goodness for tankless water heater). Next AM I had to drive myself to the ER (a Sunday). They had IV's running in both arms. It was either 4 or 6 bags before I even felt the need to use the facilities. I was way dried out. Couple of hours later I felt like a new man, a new man with a really nasty shower to clean. Then they wouldn't let me leave! Next morning I convinced them to let me go by asking nicely several times, and then ramping up the PIA factor.

The shower had not cleaned itself.....