Arm & Hammer Baking Soda is $1.00 at Dollar Tree. Print a $0.50/2 Arm & Hammer coupon to use at checkout. Get two boxes of baking soda for just $0.75 each!

Use one $0.50/2 Arm & Hammer Baking Soda products (armandhammer.com)

Final Price: $0.75 each, when you buy 2