Muc-Off Bike Care Duo Pack Clean, protect and shine your bike with Muc-Off's Bike Care Duo Pack which is also great value for money, offering one 1 litre Muc-Off Biodegradable Bike Cleaner and one 500ml Muc-Off Bike Spray. Muc-Off Bike Cleaner This classic pink Bike Cleaner has incredible cleaning power because it contains revolutionary Nano Technology that breaks down dirt and grime on microscopic levels, while also caring for your bike’s delicate finish. Because Muc-off uses the finest ingredients and surfactants, their formula is a closely guarded trade secret. Muc-Off Bike Spray Bike Spray is the ultimate liquid bicycle protection. Preserve and freshen your bike with Bike Spray’s incredible water dispersing action! It’s a perfect ‘all over’, after-wash corrosion inhibitor due to its extremely high oil content. This increased oil content creates the finest bike protection spray on the market. It drives out moisture and leaves a sparkling, non-sticky protective layer on your frame, drive chain, metal parts and paintwork.