Once u buy one ull never go back to anything else. They really help loosen a lot of the dirt and crud from the car before even touching the car. You just use a normal hose line. I hate swirls/scratch's on my car so this is a great tool to use to prevent them while washing a car. All the stuff you see over the counter are just crappy sud guns and dont even get me started on that mr clean auto dry that thing is laughable. You will stlill have to pull out your buckets and wash mitt u cant skip that part so if your thinking of buying it and using it like the auto dry system its not like that. If u want to buy one a good place to start is amazon.com. here is the link
http://www.amazon.com/Gilmour-75QGFM...4984685&sr=8-1 . I also highly suggest the fire nozzle hose its awesome as well. Also get some quick connects to remove and use both tools it makes it very quick and much easier.