They work surprisingly well
I have bought two sets of these bags.  The first few bags I put in my car to remove a lingering odor from hauling trash.  The odor disappeared.  I also have some in a long closet beneath the stairs that smells stale and musty after a while.  No more!  I tried "recharging" them in the sunshine, and that worked well also.  I am a very satisfied customer.
Rating: 5 stars