I started using arm&hammer baking soda in my refrigerator because my mom did...and her mom did, etc.  It keeps the fridge fresh and absorbs all the odors like magic.  But...only recently did I learn all the other things its good for.  You can brush your teeth with it, you can add it to your laundry, it even absorbs household odors.  Its so versatile!

I'd never use any other brand.  Thank you Arm and hammer for a fantastic product!