Oh, the wonders of terminology! "Sanitizers" are items recognized by the EPA as (1) safe and (2) proven killers. Labeling something as a "sanitizer" without the blessing of the EPA is a violation of law, although many a LHBS has been known to be creative with this terminology. CA EPA got persnickity lately and visited numerous LHBS even citing some for labeling Soda Ash as a 'Barrel Sanitizer' when the State EPA has no such approval on record for that item in that use, regardless of whether it may be effective or not. My Pink Panther Detective Manual indicates that perhaps a similar use of creative labeling may be afoot here as well.