The Griot's Garage Foaming Surface Prep Secondary Bottle allows you to easily pre-treat various areas with the popular Griot's Garage Foaming Surface Prep. The Foaming Surface Prep is a foaming deep cleaner that has a high pH formula. This formula helps loosen tough dirt and grime, along with old protective layers for a deep clean. For the largest amount of foam, applying via the THE BOSS Foam Cannon is ideal. However, this application method requires the use of a pressure washer. If you do not have a pressure washer, or simply want to apply by hand, this Foaming Surface Prep Secondary Bottle is great! The bottle is clearly labeled at the 10:1 dilution ratio making for quick and easy pre-treatment of areas such as bumpers, grilles, hoods, side mirrors, rocker panels, door jambs, trunk jambs, engines, tires, and wheel wells.