1. After the sterile cotton swab is used up, the outer package shall be sealed. Once the outer package is opened and properly stored, it can be kept sterile within 24 hours. For more than 24 hours, it is no longer sterile due to contamination by bacteria in the air.

2. Disinfection only kills pathogenic microorganisms, and sterilization can kill the seeds of bacteria, that is, spores. Cotton swabs with bacterial spores, disinfectant on its no way, even disinfectant may be contaminated. At this time not only can not play a role in disinfection, but may cause infection, so no longer sterile cotton swabs should not be used on the wound.

3. Do not place a cotton swab in the ear canal. Using a cotton swab to remove the earwax may cause the earwax to fall off from its original place and pile up. It is easier to penetrate into the ear canal and block the ear, causing pain, hearing problems, tinnitus or dizziness. If necessary, medication may be needed to solve it. Another cotton swab may enter too deep, causing the eardrum to rupture.

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