It's 2am, and you wake up to the sound of water splashing. Uh-oh. A collection of scenarios runs through your mind and you rank each silently from awful to more awful. Well, it could be your 3 year-old woke up and decided to brush his teeth. That's not great, but it's probably a much more desireable scenario than a busted water heater or an overflowing toilet. Oh no. It's overflowing toilet. And you're barefoot. After you stop the water running and mop up the six or so inches