Organic contamination and TAR residue can be found on any type of vehicle due to their usage. To remove safely this type of contamination you can use Q²M TAR. Once your vehicle is cleaned and damped, spray liberally Q²M TAR on the contaminated area, let it dwell but don't let it dry. The solution will react with the contaminant and turn brown. Rinse off heavily, inspect & re-apply if necessary. For more effective removal, on Q²M TAR applied on the surface you can agitate in straight motion with our Q²M SilkMitt. This type of organic contamination can be the result of where and how your vehicle is parked - check the environment where your vehicle is staying to reduce the settlement of such contaminants.