Is this the same baking soda as the small boxes?

Yes. It is pure sodium bicarbonate, just in a 13.5 lb bag instead of a box.

Can I use it for baking?

Yes. It is food-grade, kosher, and unscented, so it works in recipes the same as boxed baking soda.

How should I store the bag?

Keep it sealed in a cool, dry place. Transferring it to an airtight container helps prevent clumping.

Does it work as a laundry booster?

Yes. It is commonly added to laundry to help with odors and to boost cleaning.

Yes. It has no added fragrance or harsh chemicals.

Is $21.90 a good price?

That is the only new price listed, $21.90 at Walmart as of November 7, 2026. Compare it per pound against smaller boxes before buying.

Where is the Baking Soda 13.5 lbs. Bag cheapest?

At Walmart, for $21.90, as of our latest check.

Where can I buy the Baking Soda 13.5 lbs. Bag?

3 stores we checked sell it, including Walmart, eBay, Staples.

ARM & HAMMER

Baking Soda 13.5 lbs. Bag

Best price now

$21.90at WalmartObserved at 10:22 PM

Prices are checked against each store and labelled with when.

Visit Walmart

ARM & HAMMER

Baking Soda 13.5 lbs. Bag

Best price now

$21.90at WalmartObserved at 10:22 PM

Prices are checked against each store and labelled with when.

Visit Walmart

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Our take on the Baking Soda 13.5 lbs. Bag

Arm & Hammer Baking Soda is pure sodium bicarbonate in a 13.5 lb resealable bag, sold as one part pantry staple and one part household cleaner. It is unscented, kosher, and free of added chemicals, so it works for baking, deodorizing, and scrubbing sinks, tubs, and pans. The bag format is aimed at heavy users who go through boxes quickly. The best new price is $21.90 at Walmart as of November 7, 2026, the only new price listed.

Best forHouseholds that clean and deodorize oftenBakers who go through baking soda fastFridge, drain, and trash-can odor controlLaundry and general scrubbing

Pros

One ingredient: pure sodium bicarbonate
Large 13.5 lb bag cuts down on repeat buying
Works for baking, cleaning, and deodorizing
Unscented and free of harsh chemicals
Kosher and shelf-stable

Cons

Powder clumps if the bag takes on moisture
Bag is bulky to store and needs a sealed container
No scoop or shaker included
Not a substitute for a detergent or disinfectant

Baking Soda 13.5 lbs. Bag prices at every store

WalmartNew
In stockSold by Reliable CommerceReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$21.90+ $5.99 shippingObserved at 10:22 PM
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Also available at

eBayCheck price at eBay
StaplesCheck price at Staples

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Baking Soda 13.5 lbs. Bag price history

Lowest price we've seen: $23.49 on Nov 8 at Staples. Tracked across 2 stores since Nov 8.

What reviewers say

4.8 / 5479 ratings

Rated 4.8 out of 5 from 479 ratings, buyers treat it as a dependable staple for both cooking and cleaning. The large bag is the main draw, though some find it awkward to store and keep dry.

What people mention

ValuePraisedBuyers say the big bag is cheaper per pound than small boxes.
VersatilityPraisedOwners use it for baking, scrubbing, laundry, and odor control.
PackagingMixedThe bag is convenient in size but awkward to pour and reseal.
MoistureCriticisedSome report clumping when the powder is exposed to damp air.

About the Baking Soda 13.5 lbs. Bag

Trusted, all-natural product can clean sinks, counters, microwaves, refrigerators, pots and pans, tubs, toilets, pools, laundry and more. Simply sprinkle it in waste receptacles, drains and grease traps to help eliminate odors.

Specifications

clothing_size: NASource
color: WhiteSource
size: 13.5 lbsSource
Form: PowderSource
Weight (lb)

Questions and answers

Is this the same baking soda as the small boxes?: Yes. It is pure sodium bicarbonate, just in a 13.5 lb bag instead of a box.
Can I use it for baking?: Yes. It is food-grade, kosher, and unscented, so it works in recipes the same as boxed baking soda.
How should I store the bag?: Keep it sealed in a cool, dry place. Transferring it to an airtight container helps prevent clumping.
Does it work as a laundry booster?: Yes. It is commonly added to laundry to help with odors and to boost cleaning.
Is it unscented?: Yes. It has no added fragrance or harsh chemicals.
Is $21.90 a good price?: That is the only new price listed, $21.90 at Walmart as of November 7, 2026. Compare it per pound against smaller boxes before buying.
Where is the Baking Soda 13.5 lbs. Bag cheapest?: At Walmart, for $21.90, as of our latest check.
What do buyers say about the Baking Soda 13.5 lbs. Bag?: Rated 4.8 out of 5 from 479 ratings.
Where can I buy the Baking Soda 13.5 lbs. Bag?: 3 stores we checked sell it, including Walmart, eBay, Staples.