Commercially purchased 84 disinfectant is a concentrated liquid, need to be diluted before spraying, the concentration is too high or mixed with toilet bowl cleaner and other strong acid cleaners, there will be a large amount of chlorine generated, resulting in chlorine poisoning. Disinfection of food and drink dishes with the original liquid in accordance with the ratio of 1:150 to water, the utensils need to be disinfected in the diluted liquid soak for 20 minutes. For fruits and vegetables, mix the liquid with water at the ratio of 1:600, soak the fruits and vegetables to be disinfected in the diluted liquid for 20 minutes and then wash them with water. For surfaces and public places, mix the liquid with water at a ratio of 1:100, soak for 20 minutes or scrub with a rag or mop, and spray with a plastic jug. For fabrics, use 1:100 solution to water, soak for 20 minutes and rinse with water.