A foam cannon is a great tool used in washing your car but is not a necessity. MTM Hydro has been one of the original forces behind using a foam cannon for washing vehicles. They're the only ones we carry here at Obsessed Garage. The foam cannon delivers soap in a way that allows the soap dwell on the car longer. This helps remove any leftover dirt from the initial pre-spray and provides better lubrication on the paint when you use your wash mitt. The new MTM Hydro PF22.2 was just released a few months ago and it solves the problem of the foam cannon tipping over. Shop below for all our foam cannons and accessories to go with them like the quick disconnect package we offer.