i also use the Muc Off silicone spray ,spray on wipe surplus off,does a great job and bike looks superb. The Muc of dirt remover/cleaner i won't use. I think this is quite strong in chemicals. I use to use that, but diluted it down 3 to 1 till it ran out.
A cheaper alternative to Muc off Silicone is The GT85. halfords stocked it had the cheapest price a couple of months back