I am starting remodel of my kids bathroom. Planning to include a water sensor on the floor to warn about overflow from sink, toilet, or bath (my kids are young and may put things in toilet they are not supposed to!!). I was thinking of putting the sensor on the floor behind the toilet. That would make it pretty unobtrusive. This way even if there was a tub overflow or sink overflow it should be picked up pretty soon too. Would this be prone to false alarms from normal floor mopping? Any other suggestions about placement?