Knowledge of vinegar and chemistry is used. In fact, carrion and other things are alkaline substances. Just neutralize it with acid. The activated carbon you mentioned above belongs to alkaline substances and can only clean dirt. Although it also helps, you can't clean it thoroughly. As the temperature rises, the dirty dirt in the car will come back to haunt you. Only by neutralizing with acidic substances can it be cleaned. You don't have to use vinegar. Other acidic substances will do, preferably tasteless. Hehe, I hope I can help you. I wish you good health, all the best, happy family and prosperous business.