The GRANT'S™ Extreme Foaming Spray Gun makes it quick and easy to pre-soak your car, SUV, truck, boat, RV, or recreational vehicle with a thick layer of foam before using your wash mitt and bucket. This GRANT'S™ foam gun simply attaches to any garden hose for quick and easy setup, while still delivering extremely thick foam that helps to loosen and lift grime without brushing or scouring the vehicle's finish. The 32 oz. soap reservoir is translucent for an easy view of the remaining soap mixture, while the quick-disconnect pistol grip quickly detaches for easy rinsing. Use Instructions: Fill the extra large 32 oz. soap reservoir with a mixture of your favorite car wash soap and water, typically at a ratio of between 3 to 5 parts water to each part of soap (roughly between 6 and 10 ounces of soap, with the remaining filled with plain water). For the thickest foam, a higher concentration of soap typically yields the best results. PRO TIP: For best results, we recommend using either MEGUIAR'S Gold Class Car Wash Shampoo and Conditioner or MEGUIAR'S Hyper Wash (Professional-grade 3X+ concentrated soap), both available in-store and online from HARBOR FREIGHT TOOLS.