Mild Bleach Solution
Stains and spots can be removed as follows: Rust: Soak the affected area in a 5% solution of oxalic acid dissolved in hot water. Follow this with a 2% solution of hydrochloric acid in warm water and, finally, rinse the spot well with clear water. Number adhesive: Soak the area in cleaner's benzene until the adhesive can be rubbed away with a rag. Oil, tar, and varnish: Use trichloroethylene either by itself or in solution with a liquid detergent. Mildew: Soak the affected area in a l% solution of chlorine (household bleach will do) and cold water. Rinse thoroughly and dry. I would use some liquid detergent first to clean the soiled area the best you can. Then use the bleach solution to kill any existing mold/mildew spores.
