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Reusable Cat Litter Systems: Granules, Crystals or Pellets

Last checked Sep 2026 7 products compared Specs + aggregated owner reviews No paid placement
How we research & rank: We do not accept payment for placement and we do not test in a lab. Rankings are built from published specifications, safety and industry standards, and aggregated real-owner reviews. Read our full method ›
The short version

CatGenie’s A.I. Self-Cleaning Cat Litter Box suits owners who want granules washed and dried automatically. Households without nearby plumbing do better with PetSafe’s Reusable Tray and Crystal Litter. Multi-cat homes needing faster odor control should look at Purina’s Tidy Cats Breeze pellet system instead.

CatGenie’s A.I. Self-Cleaning Litter Box leads this list by washing and drying granules automatically after every visit. It only works with a water line and drain nearby, so apartments without that plumbing should look elsewhere. PetSafe’s crystal tray system fits homes that lack those hookups, while Purina’s Breeze pellets suit multi-cat households chasing faster odor control.

Washable can mean granules cycled through a machine, a tray refilled with crystal litter, or pellets rinsed by hand, and each route suits a different home. A system chosen for the wrong plumbing or cat count often sits unused within weeks. We compared automation, odor control and upkeep effort, drawing on published specifications and patterns owners report.

What we compared: automation, odor control, upkeep effort and plumbing needs across seven reusable litter systems We do not test in a lab; rankings come from published specifications and aggregated owner reviews.

Our top picks

1Best overallEditor’s Choice
CatGenie A.I. Self-Cleaning Cat Litter Box

CatGenie A.I. Self-Cleaning Cat Litter Box

9.4Our scoreout of 10

This machine washes, flushes and dries a bed of reusable granules after every visit, automatically. Owners schedule cycles and check cartridge levels through a phone app. Daily scooping disappears from the routine, since the same granules stay in place for months.

Type: Automatic self washing, flushing, drying boxLitter compatibility: CatGenie Washable Granules onlyControl: Smartphone app schedulingInstallation: Requires nearby water supply and drain
Pros
  • Wash, flush and dry cycle removes scooping duty entirely
  • App tracks cycles and cartridge levels from a phone
  • Granules stay in place for months at a time
Cons
  • Needs a nearby water line and drain hookup
  • Works only with CatGenie’s own washable granules
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2Best for automatic litter boxesBest for ScoopFree Owners
PetSafe ScoopFree Reusable Tray with Crystal Litter

PetSafe ScoopFree Reusable Tray with Crystal Litter

9.1Our scoreout of 10

A refillable plastic insert swaps out ScoopFree’s disposable trays for repeat use. Crystal litter included in the box locks moisture into non-clumping granules, which cuts odor compared with clay. Owners top up crystals between cycles instead of buying a full replacement tray.

Compatibility: Fits all ScoopFree Crystal self-cleaning boxesLitter type: Non-clumping crystal, fresh scentIncluded: 4.3 lb litter bag with reusable trayCare: Tray rinses clean, litter tops up as needed
Pros
  • Fits every ScoopFree Crystal self-cleaning box
  • Cuts down on disposable tray waste over time
  • Crystals absorb moisture without clumping
Cons
  • Crystals still need periodic topping up
  • Tray needs manual emptying and rinsing

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3Best refill for CatGenie ownersBest Refill
CatGenie Washable Granules

CatGenie Washable Granules

8.9Our scoreout of 10

These granules are engineered specifically for CatGenie’s A.I. and 120 machines. A single bag lasts months, according to owner reports, since the box washes and reuses the same batch. Its clump-resistant formula keeps the rake and pump running smoothly.

Compatibility: CatGenie A.I. and 120 machinesMaterial: Natural and synthetic granule blendPackage size: 3.5 lb bagTypical use span: Several months per bag with regular washing
Pros
  • Purpose built for CatGenie hardware
  • Owners report months of use per bag
  • Lower dust than traditional clay litter
Cons
  • Only compatible with CatGenie machines
  • Costs more per pound than generic clay litter

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4Best for multi-cat householdsBest for Multi-Cat Homes
Purina Tidy Cats Breeze Pellets

Purina Tidy Cats Breeze Pellets

8.7Our scoreout of 10

Zeolite pellets pair with the Breeze litter box system, separating solid waste from urine that soaks into a pad below. The pellets dehydrate waste and control odor for about 30 days, per the package directions. Many owners rinse them under water to stretch a single bag past one cycle.

Material: Zeolite mineral pelletsSystem: Used with Tidy Cats Breeze box and padsOdor control: Dehydrates waste, rated near 30 daysReuse: Owners report rinsing pellets to extend use
Pros
  • Pellets track far less than clay or clumping litter
  • Handles several cats sharing one box well
  • Rinsing lets owners stretch a single bag further
Cons
  • Requires the separate Breeze box and pads
  • Rinsing pellets by hand takes extra time

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5Best budget pickBudget Pick
MAOMIDA Washable Cat Litter Granules

MAOMIDA Washable Cat Litter Granules

8.5Our scoreout of 10

A lower cost swap for CatGenie’s own washable litter, built to run inside an A.I. or 120 machine. Each 7.2 lb bag is sized to last months before a refill is needed. The biodegradable formula is also labeled safe to flush in small amounts.

Compatibility: CatGenie A.I. and 120 machinesPackage size: 7.2 lb bagMaterial: Biodegradable granulesDisposal: Flushable in small amounts
Pros
  • Costs less than CatGenie’s own granules
  • Larger bag reduces reorder frequency
  • Biodegradable and labeled pipeline friendly
Cons
  • Third party fit can vary slightly by batch
  • Not intended for traditional open litter boxes

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6Best eco-friendly reusable trayEco Pick
Forever Litter Tray

Forever Litter Tray

8.2Our scoreout of 10

A permanent recycled ABS insert replaces PetSafe’s disposable ScoopFree trays for good. Owners fill it with their own crystal litter rather than buying a new tray each cycle. Its clip-on flap targets easier lifting and cleaning than the stock tray.

Material: 100 percent recycled ABS plasticCompatibility: PetSafe ScoopFree self-cleaning boxesDesign: Clip on flap for easier cleaningOrigin: Made in USA
Pros
  • Made from fully recycled ABS plastic
  • Resists staining, scratching and odor buildup
  • Clip on flap simplifies removal for cleaning
Cons
  • Requires buying crystal litter separately
  • Only fits PetSafe ScoopFree brand boxes

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7Best for odor controlOdor-Resistant Pick
Yangbaga Stainless Steel Reusable Litter Tray

Yangbaga Stainless Steel Reusable Litter Tray

8.0Our scoreout of 10

Stainless steel replaces the plastic insert found in standard ScoopFree boxes. Non-porous metal will not absorb odor or rust the way plastic trays can over time. It fits standard ScoopFree self-cleaning boxes and ships from a small business seller.

Material: Stainless steelCompatibility: PetSafe Scoop-Free self-cleaning boxesOdor resistance: Non-porous surface resists odor absorptionDurability: Rust resistant, built for repeated washing
Pros
  • Stainless steel will not absorb odor over cycles
  • More rust resistant than a plastic tray
  • Easier to fully sanitize between uses
Cons
  • Heavier than the stock plastic tray
  • Metal edges need careful handling while cleaning

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Compared at a glance

# Model Type Best for Score Price
1 CatGenie A.I. Self-Cleaning Cat Litter Box Automatic self washing, flushing, drying box Best overall 9.4 Check price
2 PetSafe ScoopFree Reusable Tray with Crystal Litter Fits all ScoopFree Crystal self-cleaning boxes Best for automatic litter boxes 9.1 Check price
3 CatGenie Washable Granules CatGenie A.I. and 120 machines Best refill for CatGenie owners 8.9 Check price
4 Purina Tidy Cats Breeze Pellets Zeolite mineral pellets Best for multi-cat households 8.7 Check price
5 MAOMIDA Washable Cat Litter Granules CatGenie A.I. and 120 machines Best budget pick 8.5 Check price
6 Forever Litter Tray 100 percent recycled ABS plastic Best eco-friendly reusable tray 8.2 Check price
7 Yangbaga Stainless Steel Reusable Litter Tray Stainless steel Best for odor control 8.0 Check price

What to look for

What counts as washable or reusable cat litter Reusable litter today falls into three real categories. Self-washing granule systems like CatGenie clean and dry the same granules after every visit. Crystal tray systems such as ScoopFree let owners refill a permanent tray instead of tossing a disposable one. Pellet systems like Tidy Cats Breeze separate solid waste from a rinsable mineral pellet, and picking the right category matters more than picking a single brand.

Self-washing granules vs crystal tray refills CatGenie’s granule system needs a nearby water supply and drain, handling the entire wash cycle without owner input. PetSafe’s crystal tray needs no plumbing, though owners still empty and rinse the tray by hand between crystal changes. Homes without easy plumbing access usually start better with a crystal tray. Homes already near a bathroom or laundry line get more value from a full granule system.

Which system handles multiple cats best? Multi-cat households produce more waste and need faster odor control than a single-cat home. Zeolite pellet systems like Tidy Cats Breeze separate urine into a pad, so solids stay dry and easy to scoop. Granule and crystal systems still work with several cats, but they need more frequent cycles or larger trays. A second box often helps more than switching brands once a household passes two or three cats.

How to keep a reusable litter system odor free Granules need their scheduled wash cycle to actually run, so check the machine’s cartridge and water levels regularly. Crystal trays should be rinsed and dried between refills to stop residue from building up. Pellets that get rinsed for reuse need several clean water passes until the runoff looks clear. Stainless steel trays resist odor absorption better than plastic over months of repeated washing.

Frequently asked questions

What is washable cat litter and how does it work?

Washable cat litter refers to granules, crystals or pellets designed for repeat use instead of daily disposal. Self-cleaning machines like CatGenie wash and dry granules after each visit, while crystal and pellet systems get rinsed or refilled on a schedule.

Is CatGenie worth it for washable cat litter?

Owners who want granules washed automatically without daily scooping tend to rate CatGenie highly, based on aggregated reviews. It needs a water line and drain nearby, so check your bathroom or laundry layout before buying.

Can you use regular clay litter in a self-washing litter box?

No. CatGenie’s machines are built only for its own Washable Granules, and standard clay or clumping litter can clog the wash and drain system. Using the wrong litter type can also void the machine’s warranty.

How often do washable litter granules need replacing?

A bag of CatGenie or MAOMIDA granules typically lasts several months when the machine washes them on schedule. Actual timing depends on how many cats use the box and how often cycles run.

CatGenie or PetSafe ScoopFree, which is better for washable litter?

CatGenie automates the full wash cycle but needs plumbing access nearby. PetSafe’s ScoopFree Reusable Tray needs no water hookup, since owners refill it with crystal litter and rinse the tray by hand between changes.

Can Purina Tidy Cats Breeze pellets be reused?

The pellets are rated for about 30 days of use per the package directions. Many owners report rinsing them under water several times to extend use, though Purina markets them mainly as a scheduled refill.

Are stainless steel litter trays better than plastic ones?

Stainless steel trays resist odor absorption, staining and rust better than plastic over repeated washes. Plastic trays cost less upfront and still work well if rinsed consistently between crystal refills.

Is washable cat litter safe for kittens?

Reusable crystal and granule systems are generally fine for kittens once they are litter trained, though a lower sided tray helps small kittens climb in. Check each product listing for minimum age or weight guidance before switching a kitten over.

What is the best washable litter system for multiple cats?

Purina’s Tidy Cats Breeze pellet system separates solid waste from urine, which helps several cats share one box without odor building up fast. A second box still helps more than any single product once a household passes three cats.

The verdict

CatGenie’s A.I. Self-Cleaning Cat Litter Box remains the strongest pick for anyone who wants granules washed and reused with no daily scooping, provided a water line and drain sit nearby. Owners without that plumbing access should start with PetSafe’s ScoopFree Reusable Tray and Crystal Litter instead. Multi-cat households chasing simpler odor control get more practical value from Purina’s Tidy Cats Breeze pellet system.

RB

The Reviewsblaster Editorial Team

Research, Reviews & Fact-Checking

Our editorial team researches products by comparing published specifications, safety and industry standards, and aggregated owner reviews. We do not physically test products in a lab, and there are no paid placements in our guides.

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