The Leakfrogs are handy little green frog looking things that beep like crazy when they sense water on a surface. I keep one next to the bucket that my ro/di fills...that would be the bucket I overflow on a weekly basis...lol
Not to Hijack this thread but DVS referred me to this water alarm and it works like a charm....it sets off the alarm before the water hits the floor.....
it has a censor that u attach to the bucket or tank...when it gets wet it starts to scream, that means its time to turn off water or a flooding is in progress