The garden hose foam gun makes washing fast, easy, safe and virtually hands-free! The garden hose foam gun connects to a garden hose to produce a thick layer of soapy foam over the vehicle. The soapy foam loosens dirt to minimize scrubbing while hand washing. For lightly dirty cars, hand washing may not be required. Just foam the vehicle and rinse! This is ideal for not having a power washer and still want a foam cannon to use with your hose.