Another knackered Karcher.. Long hose to blame? Anyone got a Kranzle?

Do I need a patio cleaner attachment? What do they do?

The water jets are contained within the disk (which usually has a little fringe of brushes too) so there is much less mess than just using a lance.

Patio cleaners are handy, but won’t cut that deep/hard if it’s really kak. You might need to stick some cleaner on beforehand.

Top Tip for the above. Don’t bother unless it’s been raining enough that you don’t need to prewet the slabs etc. else all the water will just soak in instead of cleaning