@johnwpatrick , I also read the consumer reports about the ratings. Based on its ratings I have bought HAUTURE Compact Bottle Sanitizer, highest rating. I have been using it when I travel for a year now. Based on Dr. Honda's recent presentation, 4 models they tested all reduced NTM, but HAUTURE was not included. I have sent her a note to ask if her lab will test it in the future.

Ling