Usually the ratio of 84 disinfectant and water used for disinfection is 1:300 or a smaller ratio than 1:200, because 84 disinfectant is a type of corrosive disinfectant, which can damage the skin and the surface of the object in contact, so the ratio should be determined on a case-by-case basis. Usually 1ml of 84 disinfectant solution to 300ml of water, spray and wipe the surface of the object and then wipe with water. 84 disinfectant solution can not be sprayed directly to the skin or skin mucous membrane, easy to produce severe irritation, the application process to maintain a certain degree of ventilation in the house, because 84 disinfectant solution is a chlorine disinfectant solution, in the ground after spraying will produce an irritating smell.