I devised a method for washing apartments that does not require a lot of labor but is effective enough to clean an apartment that is almost 70 square meters in size. a couple of to three times with just one refill of the detergent. For me, a half liter of cash is plenty for eight or nine different petrol stations. The price for such a tool is 800. In theory, the costs are not intolerable at all. If the map is not set up properly, it will continue to wash the same place over and over again without ever moving on to another one. However, if the map is correctly set up, it will clean the entire apartment effectively. It has been a great assistance around the house for the past four months that I have been using it. After using it for four months, I have the impression that the reusable cloth will need to be replaced soon, and this brings the total to 800. It is quite quiet in operation.