Product review (5 stars): love it. got rid of the smell
I saw the critical review saying their ice tastes like charcoal now -- I don't use my ice, so I can't tell you if it's made my ice taste different. Recently something in my freezer or fridge started to stink. I tossed some food, but the freezer still stunk.

I put these in on a Tuesday or Wednesday. By Sunday the smell had drastically improved, if not totally disappeared. I've used baking soda before to try and get rid of the smell -- this worked much better!

I'm sold. Will definitely buy these again. Worth the money.
(and I'm posting this exact same review for the refrigerator one.)