Litter & Litter Boxes
Best Cat Litter for Odor Control
Many odor-control litters add fragrance. Feline vet guidelines written to help cats keep using the litter box recommend something different: an unscented, clumping litter, scooped every day [1].
We picked three clumping clay litters with deep rating bases. Our top pick is unscented, which is our editorial call based on those guidelines. The two scented options are for you if you want fragrance, and we explain what the guidelines say about scent.
Our 3 picks at a glance
- Best OverallDr. Elsey's Ultra Unscented Clumping Clay Cat Litter, 18 lbUnscented, clumping bentonite clay; our pick against the vet guidelinesCheck price on Amazon (opens Amazon in a new tab)
- Best Scented for Multi-Cat HomesFresh Step Advanced Odor Shield Multi Cat Clumping Litter, 2 × 18.5 lbCarbon plus Febreze scent, the highest rating and most ratings hereCheck price on Amazon (opens Amazon in a new tab)
- Best Baking-Soda FormulaARM & HAMMER Clump & Seal Platinum Clumping Cat Litter, 18 lbBaking soda plus what the listing calls odor eliminators, online-only formulaCheck price on Amazon (opens Amazon in a new tab)
How we picked
We searched Amazon for cat litter for odor control and read the top organic results. We left out deodorizer sprays, powders and additives, which aren't litter. We kept litters rated at least 4 out of 5 with thousands of ratings.
We compared them with the AAFP and ISFM guidelines on litter-box management [1]. Litter is only half the job: the box matters too, which is why we cover litter box enclosures separately.
What the vet guidelines say about litter
The 2014 AAFP and ISFM house-soiling guidelines recommend a fine, sand-like, non-scented, clumping litter at least 1.25 inches (3 cm) deep. They note that cats often find aromatic litters and deodorizers offensive [1].
Those guidelines are about getting cats to use the box, not about how a home smells. Their routine is to remove waste at least once a day, top up litter as needed, and wash the box every one to four weeks, and they advise against liners, slotted grills and deodorizing powders [1]. In our view, that routine also does the most to keep smell down.
That is why our top pick is unscented, even though it has the lowest rating of the three. If you prefer a scented litter, we'd suggest changing one thing at a time. Because cats often find aromatic litters offensive [1], watch that your cat keeps using the box.
Dr. Elsey's Ultra Unscented Clumping Clay Cat Litter, 18 lb
Sold and shipped by Amazon.com.
Best Overall is our editorial call. The AAFP and ISFM guidelines describe four litter traits: fine, sand-like, non-scented and clumping [1]. Dr. Elsey's Ultra matches two of them, unscented and clumping, but its listing describes a medium grain rather than a fine, sand-like one. We picked it for the traits it matches, not for its rating, which is the lowest of the three.
The listing describes 100% bentonite clay that forms hard clumps and "helps prevent moisture from reaching the bottom of the tray". It says the litter suits single and multi-cat homes and sifting or mechanical litter boxes, and describes it as low tracking and 99.9% dust-free.
Good to know
- Unscented, as the vet guidelines recommend [1]
- Hard clumps for easy scooping, per the listing
- Suits sifting or mechanical boxes, per the description
Keep in mind
- The listing describes a medium grain; the guidelines prefer fine, sand-like litter
- Lowest rating of the three, though from the second-largest base
- "Hypoallergenic" and "ideal for ... allergies" are the listing's claims
Fresh Step Advanced Odor Shield Multi Cat Clumping Litter, 2 × 18.5 lb
Sold and shipped by Amazon.com.
If you want a scented litter, Fresh Step Advanced Odor Shield has the highest rating and the most ratings of our three. The listing describes clay with activated charcoal, "Ammonia Block Technology" and Febreze scent, sold as two 18.5-lb boxes.
It claims 15-day odor control and that it "fights 100% of litter odors"; the listing's own footnotes define that as ammonia and fecal malodor and point to the pack for the guarantee terms. The title says it works with most automatic litter boxes.
Good to know
- Rated 4.7 from more than 54,000 ratings
- Activated charcoal in the formula, per the listing
- Low-dust formula and ClumpLock clumping, per the listing
Keep in mind
- Scented (Febreze). The vet guidelines recommend non-scented litter [1]
- The 15-day odor claim is the brand's; terms are on the pack, not the listing
- Two heavy boxes, 37 lb in total
ARM & HAMMER Clump & Seal Platinum Clumping Cat Litter, 18 lb
Sold and shipped by Amazon.com.
This online-only Platinum formula pairs ARM & HAMMER baking soda with what the listing calls heavy-duty odor eliminators. The brand says Platinum formulas have 10% more odor eliminators than its base formulas, and the title claims 14-day odor control.
The listing describes it as 99.9% dust-free and low tracking, scented, and suitable for multi-cat homes and both traditional and robotic litter boxes.
Good to know
- Baking-soda formula (the brand cites more than 170 years of deodorizing)
- Works in robotic boxes, per the listing
- 99.9% dust-free and low tracking, per the listing
Keep in mind
- Scented ("Fresh Scent"). The vet guidelines recommend non-scented litter [1]
- The spec table lists odd package dimensions and two different weights; go by the 18 lb in the title
- "10% more" and "14-day" are the brand's claims
Side by side
| Product | Scent | Material | Bag size | Works in automatic boxes |
|---|---|---|---|---|
| Dr. Elsey's Ultra | Unscented | Bentonite clay | 18 lb | Sifting or mechanical boxes, per description |
| Fresh Step Advanced | Scented (Febreze) | Clay + carbon | 2 × 18.5 lb | Most auto boxes, per title |
| ARM & HAMMER Clump & Seal Platinum | Scented (Fresh Scent) | Clay + baking soda | 18 lb | Robotic boxes, per listing |
Specs as stated on each Amazon listing, checked September 2026.
What to look for
Unscented first
The AAFP and ISFM guidelines recommend non-scented litter and warn that cats often find aromatic litters offensive [1]. We'd try unscented before assuming you need fragrance.
Clumping
The guidelines recommend clumping litter and removing waste at least once a day [1].
Depth
The guidelines suggest a litter depth of at least 1.25 inches (3 cm) [1]. Buy enough to keep it there.
Your routine
The guidelines recommend scooping at least daily and washing the box every one to four weeks, and advise against deodorizing powders [1].
The bottom line
- Best Overall: Dr. Elsey's Ultra Unscented is our call: it matches the guidelines on scent and clumping, though not on grain size.
- Best Scented for Multi-Cat Homes: Fresh Step Advanced Odor Shield has the highest rating and the most ratings of the three, if you want fragrance.
- Best Baking-Soda Formula: ARM & HAMMER Clump & Seal Platinum is the scented alternative built around baking soda.
Questions pet parents ask
What cat litter controls odor best?
None of our sources measured odor directly. The AAFP and ISFM guidelines, written to help cats keep using the box, recommend an unscented clumping litter, scooped at least once a day, with the box washed every one to four weeks [1]. We think that routine also does the most for smell. Our unscented pick is Dr. Elsey's Ultra.
Is scented cat litter bad for cats?
The AAFP and ISFM guidelines recommend non-scented litter and say cats often find aromatic litters and deodorizers offensive [1]. If you switch, watch for your cat avoiding the box.
How deep should cat litter be?
At least 1.25 inches (3 cm), according to the AAFP and ISFM guidelines [1].
How often should I change cat litter?
The guidelines say to remove waste at least daily, add litter as needed, and wash the box every one to four weeks [1].
Should I use litter deodorizer powder?
The guidelines advise against deodorizing powders, liners and slotted grills [1].
Sources
- AAFP and ISFM Guidelines for Diagnosing and Solving House-Soiling Behavior in Cats, Carney HC et al., Journal of Feline Medicine and Surgery 16:579–598 (2014). journals.sagepub.com