The best motorcycling channel on Youtube has uploaded another one:
I use the bio one and it smells fantastic there actually 2 mucoff well I found one isn’t that great but the other one was brilliant it stripped the grease right off but doesn’t do much good to the patio afterI use the mucoff cleaner as it's biodegradable, but I've always thought it was quite hard work to actually get the chain clean with it!
This'll get you dribbling...