Peaty's Foaming Drivetrain Bike Degreaser & Cleaner – High-Strength, Biodegradable Foaming Bicycle Degreaser, Safe on E-Bikes & Waterproof Grease, Powerful Spray for Mountain MTB, Road & Electric Bike

This stuff is so good! I usually use MO chain cleaner as it's the most effective, but it's expensive and I find it doesn't go far. I've tried other brands that pretty much do nothing so when I needed some more I was going to get MO again but saw Peaty's brand one and thought; why not? Well, this stuff is amazing to say the least. It costs less, you need less of it and it does such a good job. Spray it on, it foams so it kinda stays put. Leave it a few minutes and then with minimal scrubbing you rinse it off and honestly, the chain looks new. Strangely enough as well I find the chain seems to stay cleaner for longer after being washed, maybe because it's a deep clean, I don't know, but it does.I can't recommend this enough and it should last a long time. Good lad, Peaty!

Really effective degreaser cassette now looks new, jockey wheels now not like tractor tyres . Spray on leave for 5 mins then agitate and wash off bosh shiny sparkly drive train . No horrible smell environmentally kind and does what it says

A fair bit of effort was required to completely clean my bicycle chain, gears and derailleur. Better than WD40, but I'll try MuckOff next time.

Foams up really nicely, sticks to the chain and cleans well. Use a brush to get the very stickiest gunk off and your chain looks brand new

Helps clean dirt well

Works ok but don't expect a brand new looking chain or for it to remove thicker grime from pulley wheels and chain rings even after multiple soaks ( tried with multiple brushes and chain cleaning devices )

Very good stuff like it 👍

Ok for a light clean but not up to a really deep clean.