Product review (5 stars): Much Better Than Baking Soda
Like so many others I've used the baking soda boxes for many years in my fridge and freezer. They worked "ok", but I was looking for something better. Especially since my ice seemed to be retaining odors even after doubling-up on the baking soda.

I tried this boxed option of "activated charcoal" as one of the few alternatives available. It's much wider than the soda boxes - almost twice as much, so it steals room from your food. I threw away all the ice I had accumulated in the bucket and had it make fresh. Within a week or so of internal air circulation the ice taste improved.

I suppose the level of improvement would depend on how bad-smelling your freezer is and how much airflow exists between the various food products, the ice bucket, and the charcoal. If it was packed in there tight, I would think the lack of airflow would do nothing for smells. That and it takes a bit of time to soak all those odors up.

Anyway for me it was a substantial improvement such that I would buy again. Now if only the price would come down a couple bucks I'd be 100% sold.