Product review (5 stars): 80% reduction in stinkification
My wife suffers from frequent migraines and so we have an ample supply of gel-packs in the freezer.  In the months leading up to this purchase, my wife almost stopped using the gel packs altogether because she said the smell on them completely counteracted any benefit she was getting by using the pack.  Within a month of having this deodorizer in the freezer, I would say the smell has diminished by at least 80%.  Overall we have been very pleased.