"It does NOT force you to use Clorox solution"3.0 starson by kchri
Summary: Certain tap water (depending on where you live) does not have the
electronic conductivity necessary to activate Scooba’s tank sensors.
iRobot does not recommend using other cleaning solutions with Scooba,
but you may use a dilute vinegar and water solution. You should mix
2oz. of vinegar with a full tank of water to create the conductivity
necessary to activate Scooba’s tank sensors.
People that use Scooba frequently put warm tap water with some vinegar into their Scooba and use the clorox every couple of cleaning cycles.