Cheers Andy

Blow dryers is Rons, not sure where his is from. I think he got it from chemical guys? I got mine from clean your car, but it isn't as good as Rons.

The Karcher attachment is a hose with a small filter at one end. It fits to where the normal hose goes into the Karcher and then the filter drops into the water butt. Like I said at the top, it's ok, but if you really needed to "blast" something off it might not be as good. It lacks the ooooomph of the tap pressure. But at least you can snow foam and rinse of legally