"Cleanfingers" is an episode of Special Agent Oso.
There's no water for the shower on R.R. Rapide, so Dotty and Wolfie train Oso to fill up Rapide's water tank using a hose. After filling up the tank, Oso unplugs the hose with the water still running and gets everyone all wet. That's when a special alert is called. He teaches a boy, Charlie, the importance of washing his hands before eating. Can Charlie wash the dirt off his hands before dinner time?