Robotic Vacuum Cleaner

Makes robotic vacuum what the fighters do when removing land explosives on the battlefield. Have various sensors robot vacuums that detect the dust that sucks. Do desirable sensors to go towards the dirtier part of the room. Clean several times, then stop when no more dirt detected. Smart the device it doesn’t fall from steps or stairs. The virtual wall device that’s included with it, it won’t even go outside an open doorway either.