The Cougar Foam Cannon (or Foam Gun) connects to your pressure washer and mixes your favorite car wash shampoo into a blanket of snow like foam. The thick foam works to loosen dirt and maximize lubricity to reduce swirls. The reservoir can be exchanged with our Cougar Quart Bottles to make changing your detergents fast and easy. Adjustments allow different patterns and concentrations of detergent. Works on pressure washers running up to 3000 psi and up to 5 Gallons per minute.