Like. If you wash windows periodically, and not like we do every two years, then one pass of the robot will suffice. He was able to wipe our windows the third time, but this is our fault. It is not very clear with the end of the window washing - the robot has reached the bottom and just continues to drive along the bottom from corner to corner, and on one window it has finished the cycle and stopped, how to adjust it and which buttons to press is not clear.