This bike wash sprays on and wipes off, leaving your frame clean and with a slight luster. It took me a while to notice that the nozzle has a little door that opens up. The door is, I guess, designed to make the spray more of a mist, but I prefer it open. The misting apparatus, as it were, doesn't really work for me.
Here's how I do it. I have a spray bottle of water which I use to wet the frame first. Then I spray on the Muc-Off and wipe it off with a clean damp rag. It doesn't leave much of a residue, but I still wipe again with a clean damp rag.
Muc Off makes cleaning your bikes much easier and faster than with traditional cleaners. Just spray it on your bike, let it sit a few minutes, and watch the crud dissolve with no scrubbing. I went through the small (1L) spray bottle this fall, and ordered the giant (5L) refill jug because it's more economical. You can also stretch the solution a bit by adding some water, and this doesn't seem to reduce its cleaning power.