This device uses water and brushes to clean shoes. You place your shoe in the device and turn the water on and then move your shoe from front to back to clean the bottom and sides of the shoe. You can adjust the water to be more powerful and clean it faster and better. I use it all the time to clean dirt and mud off of my shoes so I don't track it into the house. It is very quick to do and very thorough. In the past I would have to take my shoes off and run them under the water in the sink to get them clean enough. Not anymore.