I took the robot with the full understanding that it would not replace me. But I'm generally not a fan of washing windows, so I needed at least a robot for them. After a long break, windows are washed worse, several passes are needed, but then things go much better if you wash more than once a year. It is best to start in calm weather without rain. Napkins are durable, easy to wash, do not deteriorate from washing. I personally thought that after the first wash they began to absorb better.