About the foam cannon products, I do not have great water pressure so I was concerned that the foam gun would not work for me. Well it worked great. What I used to test this out was the mothers wash and wax shampoo. I filled the container up to the soap line, filled rest with water to the water line. I used all of the settings and all worked well but the lower settings worked best. It went through the solution fairly quick but was still able to soak my SUV several times over and over again.

I highly recommend this foam cannon because you don't need to carry around a big bucket of dirty soapy water to wash your car. Howerever I do use another bucket to perodically rinse my dirty sponges/mitts before scrubbing different parts of my vehicle.