Dynamic Bio Filth Fighter is a biodegradable bike wash that lifts road grime, mud and old lube without stripping finishes. It suits riders who want their bike clean after a wet ride and would rather not put harsh solvents down the drive. The formula is water-based and biodegradable, so it is safe on paint, carbon, anodised parts and decals, and safe around the plants at the edge of the drive. Spray it on, let it work for a couple of minutes, agitate with a brush and rinse. It is strong enough for a properly filthy drivetrain but gentle enough for a weekly wash. Key features Biodegradable, water-based formula Safe on paint, carbon, anodised and plastic parts Effective on mud, road grime and old lubricant Available in 500ml and 1,000ml Rinses clean without residue Rinse thoroughly and re-lube the chain after washing. Regular cleaning does more for drivetrain life than any single upgrade.