On Fri, 16 Nov 2018 19:01:13 -0700, rbowman wrote:

It is a deodorizer.

http://bestcarpetcleanerreview.net/h...t-really-work/

There are Glade makes some carpet powders with a fragrance but I find
the fragrance cloying so straight baking soda is better. The Arm &
Hammer 1 lb. boxes suggest opening it and putting it in the refrigerator
to deal with food odors.

Long ago I looked up the chemistry for how it "deodorizes".
I don't think it actually deodorizes.
People open the box and stick it in the frig, right?

Guess what.
Opening the door for the fifteen seconds it takes to remove milk moves more
air than could fit in that box, right?

a. I don't (yet) see how it can possibly deodorize, and,
b. Even if it could, the surface area is too small to do anything useful.

It's sort of like saying Listerine kills millions of germs on contact.
Guess what? Spitting just once gets rid of just as many germs.
And spitting is free. And doesn't change the taste in your mouth.

If anyone can EXPLAIN how sodium bicarbonate "removes odors", that will be
a feat.

Too many people, IMHO, believe stuff, IMHO, without thinking about it.
I'm not blaming you as no good deed goes unpunished, so I realize you
hazarded a guess ... but I've never been able to figure out HOW a 2x4 inch
surface area of a carbonate can "deodorize" a 20 cubic foot refrigerator.

How? What's the chemistry?
This thread is about chemistry.