i brought a Kracher pressure washer mainly for doing the drive patio ect, i have one with the big round patio attachment, and i have to say its awesome. I also brought a snow foam lance and snow foam, this i was not so impressed with i was led to believe that this was a good cleaning soloution if a quick clean was needed. But if thruth be told its a pre-clean. So instead of the usual spray with water, then 2 bucket method. I now use it for the 1st bit, spray snow foam on, leave 20 mins, then rinse down, then 2 bucket method. it removes allot of loose stuff, more so than just the water, but if i had used one before purchasing, i probably wouldn't have bothered.
cheers Kev.