Amazon has the Arm & Hammer Baking Soda, 1 lb. for only $0.78! (Reg. $3) You can use for baking, cleaning, deodorizing and more. This is free of harsh chemicals and gentle enough to use on many surfaces. Keep in mind, Amazon pricing can change at any time! Don’t wait to purchase this deal or it might be gone when you come back! This item will ship free for all Amazon Prime members. Or, regular members can score free shipping by adding $25 or more worth of eligible items to your cart. You can get a 30-day free trial of Amazon Prime here.