What is washing soda? Where can I buy it?
Washing soda (sodium carbonate) is in the same family as baking soda but it is much more caustic (it has a pH of 11), so you should wear gloves when mixing it to avoid irritating your skin. Washing soda cuts grease, removes wax or lipstick and neutralizes odors in the same way that baking soda does. Don’t use washing soda on delicate items like silks, woolens or vinyls. It is found in the laundry section of most supermarkets. You can also call Arm and Hammer’s toll-free number 1-800-524-1328 and a representative can tell you where it’s sold near you.
