The robot dispenses clean water onto the floor, scrubs it, then a squeegee or suction pulls the now-dirty water back into the dirty water tank, so the mop pad always uses fresh water instead of re-spreading dirt.Why is a dirty water tank better than a single-pad mop system?

Without a dirty water tank, the robot would reuse the same water or drag a soiled pad around, spreading dirt and leaving a film. The dirty water tank system is much more hygienic and thorough, especially for larger areas or heavier messes.Do I actually need a dirty water tank on my robot vacuum

Report 007919. Filed.