It is best to use 75% alcohol for disinfection at home, because this concentration of alcohol can better penetrate into viruses and bacteria and kill them. When we use alcohol to disinfect, it is best to dip a medical cotton ball into it to wipe the surface of articles. If you have to spray alcohol indoors, ventilate the room immediately and avoid open fire. How much alcohol should we use to disinfect our home? If we want to disinfect our home items with alcohol, we should choose to use 75% alcohol. Usually, too high concentration of alcohol will stimulate some bacteria to produce a protective film, while 75% alcohol can better penetrate into viruses and bacteria and kill them.
It should be noted that when we disinfect articles with alcohol, it is best to dip a medical cotton ball into alcohol, and then wipe the surface of the object with a cotton ball. Because alcohol is a flammable substance, it is easy to cause a fire if alcohol is sprayed indoors in a large area.
In addition, if we spray alcohol indoors due to special circumstances, we should open the windows at home to keep the room ventilated, and try to avoid starting the gas stove or turning on the lighter to make an open fire in the room for a period of time.