There are serveral steps you could follow:
1.Deep cleaning: Use shower gel or hand sanitizer to clean it in-depth.
2. Disinfection: Spray proper amount of disinfectant to sterilize.
3. Rinse: Stir with fingers for better effect.
4. Care and maintenance: Apply soft cloth to wipe dry, sprinkle talcum powder and spread evenly.
Taboo: Do not use hot water to clean it. Do not reverse the colloid to avoid damaging
the channel exit. Do not use alcohol or disinfectant 84, so as not to hurt human skin
and the mould. Do not use organic and mineral lubricating oils, to prevent damaging