X-Lite has been here before. The company says it's often at the receiving end of rep-spread gossip, mainly from a rival bike cleaner distributor.
Trimnell wants the following fact aired:
"Muc-Off does not harm fork seals or disc brake pads. It's a non-caustic formula, and leaves a gleaming finish, not dried out and lifeless."
Muc-Off started life in the bike trade but is now also selling in the motorcycle, dirt bike and car markets.