84 disinfectant can be used for indoor disinfection, but not with the original liquid to spray, because 84 disinfectant is corrosive and irritating taste, 84 disinfectant must be used in strict accordance with the instructions, diluted with water after use. Generally 1:99 ratio, that is, 1 part of 84 disinfectant with 999 points of water, diluted can be used to wipe the surface of the object or mopping, spraying, use 84 disinfectant disinfection indoor must be timely open the window ventilation for more than 1 hour, and in the use of 84 disinfectant to wear a mask, gloves to avoid corrosion of the skin, respiratory tract.