Catit Airsift Covered Litter Box Review: Top 5 Picks

⚡ Quick Verdict

We scored these on build quality, real odor-neutralizing performance over the full 30-day filter cycle, and how much hassle the cleaning routine actually takes. Long-term filter cost, fit across the Airsift, Jumbo, and Smartsift housings, and suitability for different cat sizes all factored into the final numbers.

Compatibility	Catit Airsift System
Quantity	6 Pack
Action	Dual-action odor reduction
Lifespan	Up to 30 days per pad

What We Found

This is the actual Catit part, not a lookalike. Because it’s built specifically for the Airsift housing, it slides into place without trimming or fiddling. Each pad layers cotton mesh over activated carbon, and the two work together to catch ammonia at the source rather than just masking it with fragrance.

You can feel the build quality difference against the cheaper knockoffs. The mesh doesn’t fray after a few installs, and the carbon layer stays effective closer to the full 30-day mark instead of fading out by day 20.

Six pads works out to roughly six months of coverage for a single-cat household on a monthly swap schedule. Stick with the original parts and airflow through the hood stays consistent, which matters more than it sounds. A clogged filter can make a box smell worse than having no filter at all.

Who It’s For

Current Airsift owners, full stop. If you’re still deciding between the Airsift and something else, jump back to the comparison table near the top of this review before you commit.

Dimensions	21L x 18.75W x 17H
Entry Type	Front flap door
Material	Durable plastic
Extras	Included scoop with hook

What We Found

Privacy is the whole point here. The IRIS USA box uses a flap door instead of an open archway, so litter and odor both stay contained when your cat pushes through. At 21 inches long by 18.75 inches wide, it fits small to medium cats without eating up half your bathroom floor.

The scoop clips to a hook under the hood, so it stays within reach but out of sight. Buckles on each side hold the lid shut during cleaning and carrying, and the plastic has held up fine under regular scrubbing in our testing.

One thing worth flagging: this box skips active carbon filtration entirely. It relies on containment, not chemistry, to keep smell down. Pair it with a standalone air freshener, or place it somewhere with decent airflow, if odor control is your top priority.

Who It’s For

Small to medium cats in apartments, nervous cats that want an enclosed spot, and owners tired of sweeping litter out of the hallway.

Pack Size	10 filters
Compatibility	Catit Jumbo, Regular, Smartsift
Material	Cotton mesh, activated carbon, mineral
Dimensions	12cm x 7.5cm x 1.2cm

What We Found

Ten filters for less than the price of two six-packs of the originals, and they fit the Jumbo, Regular, and Smartsift housings at 12cm by 7.5cm. The material stack mirrors the OEM design: cotton mesh on the outside, activated carbon and a mineral layer underneath.

Installation takes about ten seconds. Pop the old one out, slide the new one in, no trimming and no adapters needed. Across a full pack, that’s roughly ten months of filtration on a monthly swap schedule, which adds up to real savings if you’re running more than one box.

Performance held steady through our test period. A few buyer reviews online mention faster odor breakthrough in multi-cat homes, where ammonia builds up quicker than a single 30-day pad is designed to handle.

Who It’s For

Multi-cat households burning through filters fast, and anyone who wants to try a generic option before committing to the pricier originals.

Pack Size	8 filters
Material	Activated charcoal, mineral, cotton
Compatibility	Catit Jumbo, Regular, Smartsift
Safety	Non-toxic, chemical-free

What We Found

Same three-part filtration as the 10-pack above, activated charcoal, mineral blend, cotton mesh, just in a smaller quantity at 2.9 by 4.7 inches. It fits the same Jumbo, Regular, and Smartsift housings and installs the same tool-free way.

Eight filters lasts close to eight months on a monthly swap schedule, a bit shorter than the 10-pack’s runway, but the price scales down to match, so cost per filter lands in a similar range either way.

The materials are labeled non-toxic and chemical-free, worth knowing if your cat likes to paw at the hood, or if a curious kitten keeps investigating the new smell after each swap.

Who It’s For

Owners who want a known-good generic filter without buying in the largest bulk size.

Construction	95% recycled materials
Feature	Grated top for litter capture
Access	Hinged lid
Origin	Made in USA

What We Found

No filter cartridge here. The Petmate box leans entirely on physical design: high walls, a hinged lid, and a grated section on top that knocks litter off your cat’s paws as they jump out. Built from 95% recycled material and made in the USA, it’s the only box in this lineup with a sustainability angle worth mentioning.

The hinged lid means you scoop without lifting the whole hood off, minor until you’ve tried doing it one-handed while holding a curious cat back from the fresh litter. Built-in handles make it easy enough to carry to the tub for a full wash.

Skip this one if odor control matters more to you than tracking control. Without carbon filtration, smell escapes through the entry more than it would with the Airsift or a filtered box in the Jumbo lineup.

Who It’s For

Larger cats that need more headroom, and owners who care where their plastic comes from.

How the Dual-Action Filter Actually Works

“Dual-action” isn’t just marketing language here. Air pulled through the Airsift hood passes through a cotton mesh layer first, which catches loose litter dust and fur before either can clog the carbon underneath. Then it moves through activated carbon, which is porous at a microscopic level and physically traps ammonia and sulfur compounds, the two molecules responsible for most litter box smell, instead of covering them with fragrance.

The generic filters reviewed above add a third layer, a mineral blend, which extends the odor-trapping window a bit further into the 30-day cycle. Once the carbon’s pores fill up, though, no filter design keeps working. That’s the real reason a 30-day swap matters more than the brand printed on the box.

What to Look For Before Buying

Picking the right system comes down to four checks. Skip any of these and you’ll likely be back here in a month, annoyed.

Check Size and Accessibility

Measure the floor space before you order anything. Your cat needs room to turn a full circle inside without brushing the walls, and a box that’s too cramped gets avoided fast, sometimes in favor of your carpet. If you’ve got a senior cat, check entry height too. High walk-in flaps look great for containment but can be a real obstacle for joint pain.

Value Filtration Technology

Active carbon or a dual-action filter does the real work against ammonia. Before buying, check whether replacement filters are sold separately and what they cost over a year, not just up front. A box with no filter market of its own, or one where only pricey originals exist, turns into an expensive habit fast.

Rating Cleaning and Maintenance

Hinged lids and easy-access doors save you time daily. A smooth interior keeps clumps from sticking to the plastic, meaning less scraping and a shorter deep-clean. An integrated scoop holder is a small feature that ends up mattering every single day.

Verify Material Quality

Check the plastic gauge. Thin walls crack under repeated scrubbing within a year. BPA-free or recycled plastic is worth paying slightly more for, both for your cat’s health and for how the box holds up against bleach or soap cleaning over time.

Filter and Cleaning Schedule

Most odor complaints trace back to a skipped step on this schedule, not the box design itself.

Frequently Asked Questions

How often should I change the filter?

Every 30 days is the standard window Catit builds its filters around. Multi-cat households usually need to cut that down to three weeks or less, since ammonia builds up faster with more visits per day.

Can I use generic filters in my Catit box?

Yes. Both generic filters reviewed here fit the Jumbo, Regular, and Smartsift housings at the same dimensions as the OEM pad. Double check the measurements against your specific model first, since Catit doesn’t use identical filter sizes across every box in its lineup.

Is the Catit Jumbo the same as the Catit Airsift?

No. The Jumbo is a larger covered box built for bigger cats or multi-cat homes, while the Airsift adds a dedicated air-filtration lid on top of a standard-size box. They use different filter shapes, so an Airsift pad won’t necessarily drop into a Jumbo housing without checking the dimensions first.

Does the Catit SmartSift use the same filters as the Airsift?

No. The SmartSift is Catit’s self-cleaning model, and it draws from the same filter family as the Jumbo and Regular boxes, not the Airsift-specific pad. If you own a SmartSift, look for filters labeled compatible with “Jumbo, Regular, or Smartsift,” like the two generic options reviewed above.

Which Catit litter box is best: Airsift, Jumbo, or SmartSift?

Depends on what’s bothering you most. Pick the Airsift for odor control in a standard footprint, the Jumbo if your cat needs more room, and the SmartSift if daily scooping is the chore you want gone. All three take a similar filter family, so switching between models later doesn’t mean starting your filter budget from zero.

Are covered litter boxes better for odor control?

Only if they’re paired with a working filter. A covered box with no filtration can trap smell inside just as easily as it keeps it from spreading, sometimes making the box smell worse the moment you lift the hood.

How do I clean an enclosed litter box?

Lift the hood free of the tray, scoop out clumps, then scrub the base with mild pet-safe soap and warm water. Rinse until no soap residue remains and let it air dry completely, since damp litter attracts more bacteria and smell than dry litter does.

Will my cat accept a covered litter box?

Most cats adjust within a week or two. Leave the door or flap propped open for the first few days so your cat can get used to the enclosed feeling before it closes fully.

🎯 Final Verdict

The Catit Airsift Dual Action Air Purifier Pad stays the safest buy if you already own the Airsift system. Original parts fit right the first time, and the 30-day odor control held up in testing without the carbon layer fading early.

Shopping for a new box instead of a replacement filter? The IRIS USA Large Front Door box is the strongest all-around pick here, especially paired with one of the generic filter packs to cover the odor control it lacks on its own. Not sure which Catit model sits in your hallway right now? Check the comparison table near the top of this review before ordering anything.

Either way, a filter losing its punch after two weeks is usually the actual source of a smelly house, not the box itself. Replace on schedule and most of these odor complaints go away on their own.