There are currently four tags about the same basic thing:
sanitization sanitizer sanitation sanitizing
Having multiple slightly different tags about the same thing undermines the functionality of the tagging system.
IMHO they should be merged together into one and the other three should be made synonyms of it. A moderator can do this using the moderator tools.
Edit:
Just found this two tags which belong to this group as well:
sterilization sterilisation
[sterilize]
in the search window you get all questions tagged with it. So at the moment you would need to search for[sterilize] [sterilise] [sanitation] [sanitizer] [sterilisation] [sterilization]
to get all related questions.sanitation
andsanitizer
. They fall into the same group and that is what a tag is about. Also, don't tell me that there are so many different question where the difference between sanitation and sterilization must be expressed in the tags!