Review on Ultimate SwiftJet Garden Hose Foam Gun Sprayer Set with Microfiber Wash Mit - Adjustable Water Pressure & Soap Ratio Dial - Attaches to Any Hose for Premium Car Wash - Foam Sprayer with Wash Mit by Shaun Helm

At this price, being able to use a standard garden hose to create a car wash foam effect is very practical! There are no real instructions, so I had to experiment with the dial settings on the lid and actually found them to be the opposite of what I originally thought. "A" as the first setting gives the least foam, "E" the most and "Ø" after "E" no foam. effective, although I would recommend hooking it up to a pressure washer for more effective removal of ingrained dirt.