The Two Giants of Clumping Litter
Fresh Step and Tidy Cats dominate the clumping cat litter market because they do the two things owners need most: they clump hard so scooping is easy, and they control ammonia odor so the house does not smell like a litter box. Both are sodium bentonite clay litters, which is the ingredient that makes tight clumps possible.
The brands differ in emphasis. Fresh Step leans into odor control with activated carbon and its signature scent in many formulas. Tidy Cats leans into multi-cat performance, with larger boxes. Both have unscented options, which matters because many cats and owners dislike scented litter.
Both of these are clumping clay. In one 2025 study, cats preferred clumping clay litter, along with boxes at least 50 cm long.[1] See what cats prefer, according to the research. Evidence: limited
Clumping Strength Compared
| Aspect | Fresh Step | Tidy Cats |
|---|---|---|
| Clump quality | Tight, firm clumps | Good, slightly softer clumps |
| Odor control | Strong, activated carbon | Good, more variable |
| Dust | Low to moderate | Low to moderate |
| Scent options | Scented and unscented | Scented and unscented |
| Multi-cat line | Good | Excellent |
Fresh Step consistently produces harder, tighter clumps that do not crumble when you scoop, which makes cleaning faster and keeps the box fresher. Tidy Cats clumps well too, but the clumps are slightly softer, especially in the larger multi-cat boxes. If you scoop daily, either works; if you prefer the cleanest scoop possible, Fresh Step has the edge.
Odor Control: The Real Test
Odor control is where Fresh Step earns its reputation. Its signature formulas include activated carbon, which actively traps ammonia odors,. Tidy Cats is decent but more variable, with its best odor performance coming from the Multi-Cat and Glade lines.
One important note on scent: strongly scented litter may put off some cats and owners. If your cat is sensitive to perfume, the unscented options are the safer choice. Fresh Step Simply Unscented is one of the best unscented clumping litters on the market, and Tidy Cats Free and Clean is its Tidy Cats equivalent.
Fresh Step's Lightweight Option, For Anyone Who Hates Hauling Bags
One thing neither brand's headline formulas solve is bag weight, and it matters more than people expect once you are carrying litter up a flight of stairs or across a parking lot every few weeks. Fresh Step also makes a Lightweight Advanced Simply Unscented formula that cuts bag weight by roughly half compared to standard clay litter, while keeping the same unscented profile as the standard Simply Unscented pick above. The trade-off is that clumping and odor control fall slightly short of the full-weight Advanced formula, and it tracks a bit more because the lighter particles move around more easily. Tidy Cats does not currently offer a comparable lightweight line, so if hauling weight is your main complaint about clay litter, Fresh Step is the only one of these two brands with an answer. For a closer look at how it stacks up against the rest of the Fresh Step lineup, see our full Fresh Step formula review.
The Best Bags From Each Brand
Fresh Step Clean Paws Multi-Cat Litter
Fresh Step's best all-round formula. It clumps hard, controls odor with activated carbon, and the Clean Paws version is designed to track less. It works well for single and multi-cat homes, and the low-dust formula keeps the area around the box cleaner.
- Tight, firm clumps
- Activated carbon odor control
- Low tracking
- Strong multi-cat performance
- Scent may not suit all cats
Tidy Cats Free & Clean Unscented Clumping Litter
The best unscented option from Tidy Cats. It clumps reliably, controls odor with activated charcoal, and has no added perfume, which makes it ideal for cats and owners who dislike scented litter. The large boxes suit multi-cat homes.
- Unscented, no perfume
- Activated charcoal odor control
- Large boxes for multi-cat homes
- Softer clumps than Fresh Step
- Can track more in some formulas
Fresh Step Advanced Simply Unscented Clumping Litter
Fresh Step's unscented formula and one of the best low-odor litters available. It clumps hard, controls ammonia for weeks with activated carbon, and has no perfume at all. If your cat is sensitive to scents, this is the safest high-performance choice.
- Truly unscented
- Excellent clumping
- Strong ammonia control
- Low dust
- Heavier bag to carry
If you are comparing litter types more broadly, our clumping vs non-clumping guide explains the trade-offs. For more picks, the cat litter guide covers both brands alongside wood, silica, and other alternatives.
Which Litter Should You Choose
Choose Fresh Step if you want the strongest clumping and odor control, or if you need a genuinely good unscented formula. It is the better all-round clumper.
Choose Tidy Cats if you have multiple cats, or if you want a no-frills unscented litter that still works well.
If you are rethinking the litter, it is worth looking at the food in the same week. We compare the options in best cat food for indoor cats and best cat food for senior cats.
How to Switch Litters Safely
When switching between Fresh Step and Tidy Cats, transition gradually over about a week by mixing the new litter into the old. If your cat is sensitive to scents, choose an unscented formula from either brand and keep the box in its usual spot.
A good habit regardless of brand: scoop daily, deep-clean the box monthly, and top up with fresh litter. No litter performs well in a box that is never cleaned, and the difference between these two brands is far smaller than the difference between a clean box and a neglected one.
What Owners Report
Fresh Step owners are vocal about the clumping, which they describe as the tightest they have used, and about the activated carbon odor control that keeps the box fresh between changes. The main split is scent preference, with some owners loving the Fresh Step signature scent and others switching to the unscented version.
Tidy Cats owners praise the large boxes, especially in multi-cat homes. The Free and Clean unscented formula gets consistent praise. The most common critique is softer clumps that can break apart during scooping, which matters more if you let the box go more than a day between cleanings.
Frequently Asked Questions
Both are excellent clumping litters. Fresh Step clumps harder and controls odor better, while Tidy Cats has a stronger multi-cat lineup. For a single cat, Fresh Step is the better clumper; for multiple cats, Tidy Cats is the better fit.
Fresh Step generally has stronger odor control thanks to activated carbon in its signature formulas. Tidy Cats is decent, especially the Multi-Cat and Glade lines, but Fresh Step is more consistent at trapping ammonia odors.
Fresh Step is known for its odor control and harder clumps, while Tidy Cats is known for its large boxes and dedicated multi-cat line. Check current bag sizes and prices on the Amazon listing before you buy.
Tidy Cats is the stronger fit for multi-cat homes, with large boxes and a dedicated multi-cat line. Fresh Step also handles multi-cat well, especially the Clean Paws Multi-Cat formula.
Unscented is safer for cats, some cats may dislike perfume and avoid strongly scented litter. Both Fresh Step and Tidy Cats make good unscented options, with Fresh Step Simply Unscented and Tidy Cats Free and Clean being the standouts.
The Bottom Line
Fresh Step and Tidy Cats are both top-tier clumping litters, and your choice comes down to priorities. Fresh Step clumps harder, controls odor better, and has a genuinely excellent unscented formula, Tidy Cats delivers solid performance with a stronger multi-cat lineup.
For a single cat and the cleanest scoop, Fresh Step is the pick. For multiple cats, Tidy Cats is the better fit.
See Fresh Step on AmazonSick of scooping every single day?
Switching litter changes the odour, not the chore. Owners who want the scooping gone altogether should read the automatic box comparison first, because the models differ a lot in reliability and upkeep.
Best Automatic & Self-Cleaning Litter Boxes →Willemijn has kept animals for around 45 years. She did not have these particular items in her own home. What follows is her read on them, put together from research and from what she has seen at other owners' houses. We keep it separate from her hands-on notes on purpose, because the two are not the same thing.
Fresh Step Clean Paws Multi-Cat. Clumps well, but the scent is strong. Drawback: The added scent is too strong.
Fresh Step Advanced Simply Unscented. Clumps well, no smell. Drawback: The clumping is not perfect.
Tidy Cats Free & Clean Unscented. Clumps reasonably, but not as well as Arm & Hammer. Drawback: The clumping is not perfect.
Willemijn is a friend of the founder and is not paid for this.
References
- Iwabuchi-Inoue Y, et al. Litter box size and litter type preference and their associated behavioral changes in cats. J Vet Med Sci, 2025. PubMed