How big a pot should I use to kill the elevator

The elevator should be disinfected with a 2L pot. According to the relevant public information, the "Proposal on Standardizing the Use of Elevators in Active Response to Epidemic Situation" was published, and the cleaning and disinfection methods of elevators were announced, requiring that elevator cars, car doors, landing doors and other parts be disinfected every day, especially the internal and external call buttons that people should touch with their hands.