Don’t throw tissue paper and wet wipes into the vault toilet. It is not a trash can; the tissues and wipes can clog the toilet.
Don’t make it dirty by throwing things around it; if it isn’t clean then it can cause many diseases.
Don’t use public vault toilets that are without locks. Your safety is your responsibility.
Always bring your own sanitizer. The sanitizer in the vault toilets is more likely of low grade. It is necessary for proper hygiene.
Bring your own tissue paper for hygiene. The vault toilets can be of low quality and low in hygiene.
Always check for insects. There can be flies, bees, or spiders.
Carry your belongings inside the vault toilet if there is any facility for it. Otherwise, you have to find a safe place outside the vault toilet to keep your stuff.