Can I clean this water dish safetly??

[Bogertophis]

If I was reusing something for a new animal that had previously been exposed to a new animal, I would bleach the hell out of it, then clean it with another solution such as Novalsan or mild dish detergent or chlorhexidine, then subject it to thorough rinsing. This is separate from removing mineral deposit--clean first, then disinfect.

The "bowl" is made of some sort of plastic or resin, which can & will retain the bleach smell, fumes & toxicity; just as you don't re-use bleach bottles, bleach is a bad idea
in this case. If it were glass, sure...go ahead & use bleach...but not on plastic. You don't want to harm your snakes.