That might feel like overkill, but if you're planning to use the L40 Ultra regularly then it's going to save you a significant amount of time and effort. For $100 more, you can dispense with dealing with the water tanks entirely and buy the Refill & Drainage System model. This https://top3automaticvacuumcleane86420.thekatyblog.com/33380105/top-3-automatic-vacuum-cleaners-secrets