As the name suggests, a cat litter deodorizer is an extra product you put in your cat’s litter to cover up the pungent aroma. Which cat litter deodorizer is best? You’ll find out below with our reviews of the best cat litter deodorizer.
In this article
A Quick Look at Our Favorites in 2025
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Best Overall
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Hepper Litter Additive |
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Arm & Hammer Litter Deodorizing Crystals |
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Arm & Hammer Cat Litter Deodorizer |
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NonScents Cat Litter Deodorizer |
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TriNova Natural Cat Litter Box Deodorizer |
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The 9 Best Cat Litter Deodorizers
1. Hepper Litter Additive – Best Overall
| Package Size: | 12 ounces |
| Natural: | Yes |
| Fragrance-free: | Yes |
This excellent deodorizer uses bio-enzymes to break down odor-causing agents naturally and is safe for all cats. It can be used on any type of litter and will get to work immediately, destroying odors without a heavy, artificial smell. It’s fragrance-free, but the enzymatic formula eliminates foul odors that linger in the litter box.
What we really like about Hepper Litter Additive, our choice for best cat litter deodorizer, is that you can use it in other areas that smell, like the trash can where you dump used litter or a crate you use when your cat has kittens. We also like that it extends the life of your litter to save you a few dollars and extend your budget.
At Catster, we’ve admired Hepper for many years and decided to take a controlling ownership interest so that we could benefit from the outstanding designs of this cool cat company!
- Many other uses
- Fragrance-free
- 100% biodegradable
- Extends the life of your litter
- Safe for all cats
- Might be considered expensive
2. Arm & Hammer Litter Box Deodorizing Crystals
| Package Size: | 15 ounces |
| Natural: | No |
| Fragrance-free: | No |
Arm & Hammer Litter Restoring Clary Sage & Mint Scent Cat Litter Box Deodorizing Crystals uses baking soda and essential oils to control and eliminate odors in your cat’s litter box. Unlike most other products on our list, Arm & Hammer dissolves, so there’s less to clean up later.
Also, the sage and mint help calm your cat. Because of those features, we picked Arm & Hammer Litter Restoring as our budget buy option. However, Arm and Hammer cover the smell rather than eliminating it like others on our list.
- Essential oils calm cats
- Uses baking soda
- Dissolves after use
- Only covers odors
3. Arm & Hammer Cat Litter Deodorizer
| Package Size: | 20 ounces |
| Natural: | No |
| Fragrance-free: | No |
Arm & Hammer Litter Cat Litter Deodorizer Powder instantly eliminates odors the moment you sprinkle it on top of your cat’s regular litter. It’s also moisture-activated, and every time your cat uses their litter box, the product jumps into action to eliminate the smell.
This excellent deodorizer prevents clumping on the bottom of the box when your cat pees, making it easier for you to clean the litter box. As you might have guessed from the Arm & Hammer name, it also uses baking soda, one of the all-time great odor-absorbing substances.
- Moisture-activated
- Uses baking soda
- Easy to use
- Economical
- Scent might be overpowering
4. NonScents Cat Litter Deodorizer
| Package Size: | 16 ounces |
| Natural: | Yes |
| Fragrance-free: | Yes |
NonScents Cat Litter Deodorizer goes to work immediately after sprinkling it on your cat’s litter. The key is its natural zeolite, which doesn’t just mask odors but eliminates them at the source. NonScents is also concentrated, so a little goes a long way, and it extends the life of your litter, so you don’t have to change it as often.
Although most reviews for this product are stellar, several customers said the smell of bleach or chlorine was overwhelming. This might be problematic for some cats with sensitive noses, but most users say it works like a charm.
- Extends litter’s life
- No perfumes or chemicals
- Neutralizes odors
- Concentrated
- Has a very strong bleach smell
5. TriNova Natural Cat Litter Box Deodorizer
| Package Size: | 16 ounces |
| Natural: | Yes |
| Fragrance-free: | Yes |
TriNova Natural Cat Litter Box Deodorizer is a bio-based product that absorbs odors rather than simply covering them with a heavy fragrance. Like most on this list, Trinova helps extend the life of the litter and can keep your cat-related budget under control. The formula is also hypo-allergenic and fragrance-free.
The manufacturer recommends putting the cat litter deodorizer on fresh litter or after scooping out poop in your cat’s litter box. It’s also suitable for any litter, but some customers say it doesn’t work as well as they thought.
- Bio-based product
- Hypoallergenic
- Economical
- Must be used before potty time
6. SCENT AWAY Cat Litter Deodorizer Litter Box Odor Eliminator
| Package Size: | 10.5 ounces |
| Natural: | Yes |
| Fragrance-free: | Yes |
This all-natural, odor-fighting cat litter deodorizer uses active carbon to eliminate smells and remove greenhouse gases at the same time. Yes, cat feces emit greenhouse gases. Scent Away Cat Litter Deodorizer Litter Box Odor Eliminator also contains zeolite, which is a natural ingredient that absorbs moisture and prevents clumping.
Scent Away extends the life of your litter with less frequent changes, which saves money. One common complaint was that it stuck to the feet of cats after using their litter box, which could be problematic. Some users also claimed it didn’t cover odors as well as they would have liked.
- Uses active carbon
- 100% non-toxic
- Extends litter life
- Removes greenhouse gases
- Carbon and zeolite formula
- Sticks to cat’s feet
- Slightly expensive
7. Fresh Step Cat Litter Crystals
| Package Size: | 15 ounces |
| Natural: | No |
| Fragrance-free: | No |
We like that Fresh Step Cat Litter Crystals dissolve after application, making cleanup a bit easier and faster. Even better, it only activates when your cat goes potty, so you don’t always smell it.
One major drawback of Fresh Step is that if several cats use the same litter box, it might not sufficiently cover up the smell. In other words, it might not work as well as you hope in a multi-cat household unless you have multiple boxes.
- Activates on contact
- Dissolves for less cleanup
- Very strong odor
- Doesn’t last long
- Not good for multi-cat homes
8. Nature’s Pure Edge Cat Litter Odor Control Deodorizer
| Package Size: | 16 ounces |
| Natural: | Yes |
| Fragrance-free: | Yes |
Nature’s Pure Edge Cat Litter Odor Control Deodorizer is a good choice if you have a single cat since it doesn’t last as long with multiple cats. It’s commercial strength, however, and will usually work well with one cat even if they have pungent waste. Because it’s concentrated, you don’t need to use as much product. Plus, Nature’s Edge is odor-free, so there’s none of the chemical smell you get from many cat litter deodorizers. Although Nature’s Pure Edge is effective for most customers, it’s not ideal for multi-cat homes.
- Charcoal and zeolite formula
- Fragrance and odor-free
- Commercial strength
- Doesn’t last long
- Not for multi-cat homes
9. Nature’s Miracle Litter Box Deodorizer, 20 oz, Litter Deodorizing Powder
| Package Size: | 20 ounces |
| Natural: | No |
| Fragrance-free: | No |
We think the best thing about Nature’s Miracle Litter Box Deodorizer is that you only need a little to get a lot of odor neutralization. That makes it one of the more economical on our list, but it’s not as highly rated by consumers as some of the others. One reason might be that the fragrance can be overpowering.
Still, it is a good choice for multi-cat homes since it’s concentrated, and you don’t need to use as much in every litter box. Also, since Nature’s Miracle absorbs moisture, it makes clean-up time easier and quicker.
- Economical
- Soaks up moisture
- Only need a small amount
- Fragrance can be overwhelming
- Not great with non-clay litter
Buyer’s Guide: Selecting the Right Cat Litter Deodorizer
Like any product you purchase for your cats, some characteristics make one cat litter deodorizer better than another. We’ve listed the most important of those below to help you choose the right cat litter deodorizer for your cat, whether you have one or multiple felines in your home.
The Number of Cats That Live with You
One of the most important factors when purchasing a cat litter deodorizer is how many cats you have in your home. If you have one cat, the type of deodorizer you choose isn’t as crucial since most will work well for one cat. For multiple cats, however, it’s best to choose a deodorizer that’s quite a bit stronger. Anecdotal evidence suggests that a bio-enzymatic deodorizer works best for multiple-cat households.
The Litter Box You’re Using
Depending on the litter box you have, a litter box deodorizer might work better or worse. For example, if you have a motorized litter box, deodorizers can make the odors worse in some cases. If you use that, you might need a stronger deodorizer or more litter with every application. However, a milder litter box deodorizer will work just fine for regular, tray-type litter boxes.
Cat Allergies and Sensitivity
If your cat has allergies or is sensitive to strong smells, you must purchase a cat litter deodorizer with no fragrance. It would also be a good idea to purchase a hypoallergenic cat litter deodorizer or one that’s all-natural. If you’re not sure, check with a veterinarian.
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The Location of Your Litter Box
Although the location of your cat’s litter box isn’t a huge factor, if it’s inside a closet or other small space, the smell can be much worse than if it’s in the open. For litter boxes in small spaces, a stronger deodorizer is recommended.
How We Selected Our List of Cat Litter Deodorizers
Catster has an experienced, expert team of writers, editors, and veterinarians who carefully consider a wide range of parameters when choosing the cat litter deodorizers. This includes but is not limited to customer reviews, brand reputation, veterinary experience, hands-on testing, and of course, our cats have a say in the process too! We aim to select and review only the best products available, to help you make the best possible choice and most informed decision for your and your cat’s needs.
Why Trust Catster?
A trusted online brand since 2001, Catster has a lot of experience with cat litter deodorizers. Our team of cat-loving writers, editors, and veterinarians is dedicated to helping you make the best decision for your precious cats. Our aim is to provide the best information available for cat owners to help cats live their best life possible. To do this, we scour reviews from the most trusted sources available and this, combined with our veterinary team’s experience and expertise, helps us gather the best options available to readers. Our team is deeply invested in the health and welfare of cats the world over, and believes that expert knowledge and veterinary guidance will help you make the right choices—for you and your cats!
Final Thoughts
Our best overall choice for cat litter deodorizers goes to Hepper Litter Additive because it’s all-natural, biodegradable, fragrance-free, and works remarkably well. Arm & Hammer Litter Restoring Clary Sage & Mint Scent Cat Litter Box Deodorizing Crystals is our budget option for its price tag and the essential oils they use that help your cat stay calm.
The rest of the cat litter deodorizers on our list are all excellent products and worth considering. Whichever you choose will help reduce the admittedly awful odors many cats make when they go potty. That, in turn, can make your life a little more pleasant for you and your precious cat.
Featured Image Credit: xamnesiacx84, Shutterstock
