NonScents Cat Litter Deodorizer vs Arm & Hammer Pure Baking Soda, 13.5 lb Resealable Bag

NonScents wins because it is fragrance free, the active is a mineral with a real odor-control track record, and the granules are coarse enough not to dust up when a cat digs. Plain baking soda gets you most of the way there for a fraction of the cost, which is why it is the runner-up rather than an also-ran.

NonScents Cat Litter Deodorizer

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A fragrance-free zeolite granule you shake over the litter, and one of the few additives in this category with peer-reviewed chemistry behind it.

• Labeled fragrance free, which is the single thing feline behavior guidance asks for in a litter box.
• The active is natural zeolite, and odor control is the second largest domestic use of natural zeolite by tonnage in the US Geological Survey's 2026 figures.
• Coarse granules and a shaker cap, so dosing a big box is easy and it does not raise a powder cloud when a cat digs.

• The maker's own technology page describes an active chlorine coating on the mineral, which the front of the jar does not spell out.
• The published work on chlorine-modified zeolite in cat litter was funded by Oxiscience LLC, the company behind NonScents.
• No full ingredient list on the jar, so you are trusting the description rather than reading a panel.

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Arm & Hammer Pure Baking Soda, 13.5 lb Resealable Bag

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Plain sodium bicarbonate in a resealable bag, which is the same deodorizing active the brand discloses in its cat-specific powder, without the fragrance.

• No fragrance at all, so nothing goes into the box that a cat can take against.
• Church & Dwight's own ingredient disclosure names sodium bicarbonate as the deodorizer in its cat litter powder, and here you buy that ingredient by itself.
• By far the cheapest way to test whether an additive changes anything in your house before spending more.

• Arm & Hammer does not market this bag for litter boxes and gives no dosing guidance for that use.
• Bicarbonate is better suited to acidic odors than to ammonia, so it will not flatten every litter box smell.
• Fine powder, so it can raise dust when a cat digs, and some cats dislike that.

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Side by side

The bottom line

Our overall pick is the NonScents Cat Litter Deodorizer - A fragrance-free zeolite granule you shake over the litter, and one of the few additives in this category with peer-reviewed chemistry behind it. Choose the Arm & Hammer Pure Baking Soda, 13.5 lb Resealable Bag instead if anyone who wants to try a litter additive cheaply and does not mind measuring it out by hand.

Want the full picture, including the other options we compared and the popular one we'd skip? Read the complete The Best Cat Litter Deodorizers: 4 Compared (and One to Skip).