# PetSafe ScoopFree vs Litter-Robot: Which Should You Buy?

> PetSafe ScoopFree vs Litter-Robot: rake and crystal trays vs a rotating globe, tray costs vs liners and filters, safety, the 15 lb limit and the SmartSpin.

- Source: https://selfcleaninglitterboxguide.com/posts/petsafe-scoopfree-vs-litter-robot/
- Markdown version: https://selfcleaninglitterboxguide.com/posts/petsafe-scoopfree-vs-litter-robot.md
- Last updated: 2026-11-12

---

- [Home](https://selfcleaninglitterboxguide.com/)
- [Guides](https://selfcleaninglitterboxguide.com/guides/)
- PetSafe ScoopFree vs Litter-Robot: Crystal Trays or a Rotating Globe?

 Head-to-head
# PetSafe ScoopFree vs Litter-Robot: Crystal Trays or a Rotating Globe?
  Updated November 12, 2026 By [Self-Cleaning Litter Box Guide Editorial Team](https://selfcleaninglitterboxguide.com/about/) [How we research](https://selfcleaninglitterboxguide.com/how-we-research/)

Prices are approximate and change often, so check the current price before you buy.

## Key takeaways

- A **ScoopFree** rakes waste across a disposable crystal tray, so nothing ever encloses the cat. A **Litter-Robot** rotates a globe whose entry stays open, with laser and weight sensors to stop it when a cat is inside.
- ScoopFree trays cost **$73.49 for three** at PetSafe, about $24.50 each, and last about a month per cat. That's roughly **$294 a year for one cat**.
- With one cat, five-year costs come out close: about **$1,570 for the ScoopFree Classic** and **$1,580 for the Litter-Robot 4** on our default assumptions. With two cats, the Litter-Robot is cheaper.
- PetSafe's Canadian FAQ says ScoopFree is designed for cats **up to 15 lb**. The Litter-Robot 4 is rated from 3 to 25 lb and up to four cats.
- PetSafe's own globe-style box, the **SmartSpin** (about $340–400), takes any litter and is rated to 25 lb, but relies on a weight detector alone.

## Our top picks

- 1![PetSafe ScoopFree Crystal Classic Self-Cleaning Litter Box](https://selfcleaninglitterboxguide.com/_astro/petsafe-scoopfree-crystal-classic.CJ4bZlM__Y3Keq.webp)Cheapest upfront: rake and crystal tray, no app, about $100–140[PetSafe ScoopFree Crystal Classic Self-Cleaning Litter Box](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-crystal-classic/)Rake + crystal tray · up to 15 lb · up to 2 cats7.8**$**$$$BudgetPrice tier: Budget[Check price on Amazon](https://www.amazon.com/dp/B0CFRY7VYN?tag=selfcleaninglitterboxguide.com-20)
- 2![PetSafe ScoopFree Crystal Smart Self-Cleaning Litter Box](https://selfcleaninglitterboxguide.com/_astro/petsafe-scoopfree-crystal-smart.DQ62GmN3_G0CIT.webp)ScoopFree with an app and tray reminders: about $186–300[PetSafe ScoopFree Crystal Smart Self-Cleaning Litter Box](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-crystal-smart/)Rake + crystal tray · not published · up to 2 cats8.0**$**$$$BudgetPrice tier: Budget[Check price](https://www.amazon.com/dp/B087C7K4CP?tag=selfcleaninglitterboxguide.com-20)
- 3![Whisker Litter-Robot 4](https://selfcleaninglitterboxguide.com/_astro/whisker-litter-robot-4.CZhanV3w_12M27U.webp)Best for bigger cats and multi-cat homes: 3–25 lb, up to four cats, about $699–749[Whisker Litter-Robot 4](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-4/)Rotating globe · 3–25 lb · up to 4 cats8.7**$$$**$PremiumPrice tier: Premium[Check price](https://www.amazon.com/dp/B0BH6MD3DJ?tag=selfcleaninglitterboxguide.com-20)
- 4![Whisker Litter-Robot EVO](https://selfcleaninglitterboxguide.com/_astro/whisker-litter-robot-evo.qVzR9iO0_sr869.webp)Cheapest Litter-Robot: two cats of 3–19 lb, about $599[Whisker Litter-Robot EVO](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-evo/)Rotating globe · 3–19 lb · up to 2 cats8.6**$$$**$PremiumPrice tier: Premium[Check price](https://www.amazon.com/dp/B0G6GDC4VN?tag=selfcleaninglitterboxguide.com-20)
- 5![PetSafe ScoopFree SmartSpin Self-Cleaning Litter Box](https://selfcleaninglitterboxguide.com/_astro/petsafe-scoopfree-smartspin.BIyzfviQ_Z1TTMFE.webp)PetSafe's globe-style option: cats up to 25 lb, any litter, about $340–400[PetSafe ScoopFree SmartSpin Self-Cleaning Litter Box](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-smartspin/)Tilting drum · 2.5–25 lb · cats: not stated7.9**$$**$$Mid-rangePrice tier: Mid-range[Check price](https://www.amazon.com/dp/B0D4GHS7V6?tag=selfcleaninglitterboxguide.com-20)

### On this page 12 sections

- [ScoopFree vs Litter-Robot specs](#scoopfree-vs-litter-robot-specs)
- [How each one cleans](#how-each-one-cleans)
- [Running costs: trays vs liners and filters](#running-costs-trays-vs-liners-and-filters)
- [Safety](#safety)
- [The 15-lb question](#the-15-lb-question)
- [Litter: crystals only vs clumping clay](#litter-crystals-only-vs-clumping-clay)
- [Multi-cat homes](#multi-cat-homes)
- [Apps and convenience](#apps-and-convenience)
- [Where the SmartSpin fits](#where-the-smartspin-fits)
- [Who should buy which](#who-should-buy-which)
- [Verdict](#verdict)
- [FAQ](#faq)

## Before you choose

- [Litter-Robot Alternatives That Are Worth It (and Two to Skip)](https://selfcleaninglitterboxguide.com/posts/litter-robot-alternatives/)
- [Are Self-Cleaning Litter Boxes Worth It? Costs, Trade-Offs and Who Should Skip One](https://selfcleaninglitterboxguide.com/posts/are-self-cleaning-litter-boxes-worth-it/)
- [The Best Budget Self-Cleaning Litter Boxes Under $400 (2026)](https://selfcleaninglitterboxguide.com/posts/best-budget-self-cleaning-litter-box/)

The [PetSafe ScoopFree](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-crystal-classic/) and the [Litter-Robot 4](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-4/) are the two oldest names in self-cleaning litter boxes, and they could hardly be more different. A ScoopFree rakes waste across a disposable tray of crystal litter. A Litter-Robot turns a globe full of clumping clay. The ScoopFree is far cheaper to buy, about $100–140 for the Classic, and has the simplest mechanism. The Litter-Robot 4, about $699–749, fits bigger cats and more of them, and over a few years its running costs close the gap.

We haven’t tested these boxes ourselves. This comparison uses PetSafe’s and Whisker’s published specs and prices, Amazon and Chewy listing details, and hands-on reviews where we name the outlet. Prices are typical street prices from dated sources, not live Amazon prices, so check today’s price before you buy.

## ScoopFree vs Litter-Robot specs

| | [ScoopFree Classic](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-crystal-classic/) | [ScoopFree Crystal Smart](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-crystal-smart/) | [Litter-Robot 4](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-4/) |
| --- | --- | --- | --- |
| Typical price | About $100–140 | About $186–300 | About $699–749 |
| Mechanism | Rake over a crystal tray | Rake over a crystal tray | Rotating globe |
| Cat weight | Up to 15 lb (PetSafe Canada FAQ) | Not stated by PetSafe | 3–25 lb |
| Cats | Single or multi-cat; more than two means very frequent tray changes | Designed for one or two (Chewy) | Up to 4 |
| Kittens | Unplugged until 6 months | Unplugged until 6 months | Semi-automatic under 3 lb |
| Litter | ScoopFree crystal trays only | ScoopFree crystal trays only | Clumping clay |
| Sensors | Safety sensors; rake runs only when the cat is out | Safety sensors; rake starts about 20 min after a visit | Laser curtain + weight |
| Encloses the cat? | No | No (hood has no door) | Globe turns, entry stays open |
| App | No | Yes (My PetSafe) | Yes (Whisker) |
| Size | 28 × 20.4 × 7.1 in | 27.6 × 19.1 × 15.6 in front-entry | 22 × 27 in, about 29.5 in tall |
| Main consumable | Disposable trays, about $24.50 each | Disposable trays, about $24.50 each | Liners, carbon filters, litter |
| Warranty | 1-year limited | Not confirmed | 1-year WhiskerCare; 3-year extended plan available |

The [comparison chart](https://selfcleaninglitterboxguide.com/litter-boxes/) lists every box we cover with the same specs.

## How each one cleans

ScoopFree. You drop a sealed tray of crystal litter into the base. After the cat leaves, a rake sweeps across the tray, pushing solid waste into a covered trough at one end. The crystals absorb urine. When the tray is spent, you throw the whole thing away and put in a new one. On the Crystal Smart, PetSafe and the Amazon listing say the rake starts about 20 minutes after each visit.

Litter-Robot. The globe rotates slowly after each visit, sifting clumps through a screen into a sealed drawer below, then returns clean litter to the bed. You empty a lined drawer and top up litter.

  Four ways a litter box cleans itself The mechanism decides how safe, how messy and how expensive to run a box is.

  Rotating globeThe whole globe turns slowly after each visit, sifting clumps through a screen into a drawer below. The best-known design (Litter-Robot). Large entries, but a tall unit.
 Litter-Robot 4, 5, EVO
Tilting drumA drum on a base tilts or turns part-way to sift, then returns. Most PETKIT and many Amazon brands. Good ones keep the entrance open the whole time.
 PuraMax 2, Purobot, Leo's Loo Too, SmartSpin
Open-topAn open pan that flips or rotates to dump clumps. No hood to squeeze through and no door to close; more litter scatter.
 Neakasa M1, Lesure
Rake + crystal trayA rake sweeps waste into a covered trough on a disposable crystal tray. Nothing encloses the cat, but you buy trays forever.
 ScoopFree Crystal Smart, Classic

  Avoid designs with a door or a front that closes during cleaning: if a sensor fails, a cat can be trapped. More in [are self-cleaning litter boxes safe?](https://selfcleaninglitterboxguide.com/posts/are-self-cleaning-litter-boxes-safe/)

## Running costs: trays vs liners and filters

This is the deciding factor for most buyers.

ScoopFree trays. PetSafe sells disposable trays at $73.49 for three, about $24.50 each, or $139.99 for six, about $23.33 each. PetSafe says a tray lasts about a month for one cat. That’s roughly $280–294 a year. A Chewy answer for the Crystal Smart says a tray lasts 10–15 days with two cats, which would mean two or three trays a month. The trays include the litter, so there’s nothing else to buy. You can find the [blue tray 3-pack](https://www.amazon.com/dp/B000FEF10A?tag=selfcleaninglitterboxguide.com-20) and [lavender trays](https://www.amazon.com/dp/B07GBHK2TZ?tag=selfcleaninglitterboxguide.com-20) on Amazon. PetSafe also sells crystal litter refills ($66.99 for a 3-pack) for a reusable tray, which we haven’t priced out here.

Litter-Robot consumables. Whisker sells liners at 25 for $25 and carbon filters at 6 for $30, and says one filter covers one cat. OdorTrap packs (6 for $30) are optional. Whisker suggests replacing filters and packs every 2–4 weeks. You also buy clumping litter.

Here’s how it adds up with our default assumptions: one tray per cat per month for ScoopFree, and for Whisker boxes about four liners and one filter per cat per month plus 10 lb of clumping litter at Dr. Elsey’s Chewy price ($0.57 a pound).

| Five years, box included | One cat | Two cats |
| --- | --- | --- |
| ScoopFree Classic | About $1,570 | About $3,040 |
| ScoopFree Crystal Smart | About $1,660 | About $3,130 |
| Litter-Robot 4 | About $1,580 | About $2,470 |
| Litter-Robot EVO | About $1,480 | About $2,370 |
| ScoopFree SmartSpin | About $780 | About $1,220 |

With one cat, the ScoopFree’s $600 head start is gone after about five years. With two cats, the Litter-Robot pulls ahead after about two and a half years. And if your two cats burn through a tray every 10–15 days, as the Chewy answer suggests, the ScoopFree costs more than our table shows.

  Five-year cost for 1 cat Lowest typical box price + maker-priced liners, filters or trays + clumping litter (10 lb per cat per month at $0.57/lb). Optional extras excluded.

     Hooded globe / drum
     Open-top
     Rake / other

[ScoopFree SmartSpin

       $780](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-smartspin/)[Lesure Open-Top

       $850](https://selfcleaninglitterboxguide.com/litter-boxes/lesure-open-top/)[ELS PET Orbitie

       $860](https://selfcleaninglitterboxguide.com/litter-boxes/els-pet-orbitie/)[Furbulous Self-Packing

       $920](https://selfcleaninglitterboxguide.com/litter-boxes/furbulous-self-packing/)[Neakasa M1

       $960](https://selfcleaninglitterboxguide.com/litter-boxes/neakasa-m1/)[PuraMax 2

       $990](https://selfcleaninglitterboxguide.com/litter-boxes/petkit-puramax-2/)[Purobot Max Pro 2

       $1.1k](https://selfcleaninglitterboxguide.com/litter-boxes/petkit-purobot-max-pro-2/)[Leo's Loo Too

       $1.2k](https://selfcleaninglitterboxguide.com/litter-boxes/casa-leo-leos-loo-too/)[Litter-Robot EVO

       $1.5k](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-evo/)[ScoopFree Classic

       $1.6k](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-crystal-classic/)[Litter-Robot 4

       $1.6k](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-4/)[ScoopFree Crystal Smart

       $1.7k](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-crystal-smart/)[Litter-Robot 5

       $1.7k](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-5/)[Purobot Ultra

       $1.8k](https://selfcleaninglitterboxguide.com/litter-boxes/petkit-purobot-ultra/)
   05001k1.5k2k

  Crystal-tray boxes include litter in the tray price. Change any assumption in the [cost calculator](https://selfcleaninglitterboxguide.com/tools/litter-box-cost-calculator/).

Change any assumption, including your litter price, in the [cost calculator](https://selfcleaninglitterboxguide.com/tools/litter-box-cost-calculator/#cats=2&years=5). Whisker supplies: [liners](https://www.amazon.com/dp/B0F3QTK9ZT?tag=selfcleaninglitterboxguide.com-20) and [carbon filters](https://www.amazon.com/dp/B0BMNB1C7K?tag=selfcleaninglitterboxguide.com-20).

## Safety

Both designs avoid the most dangerous failure, a box that closes on the cat. They get there differently.

ScoopFree. Nothing encloses the cat at any point. The rake moves across an open tray, and PetSafe says its safety sensors only let it run when the cat is out of the box. The front-entry Crystal Smart has a hood, but no door. This is the least risky mechanism you can buy, and it’s why nervous owners like it.

Litter-Robot 4. The globe does turn, so the design depends on sensors. Whisker pairs a laser curtain with weight sensors to detect a cat and pause the cycle. The entrance stays open while the globe rotates, and the LR4 is one of WIRED’s picks; WIRED only recommends boxes that stay open during cycling.

### Kittens

- **ScoopFree:** PetSafe says to keep it unplugged and scoop by hand until a kitten is 6 months old.

- **Litter-Robot 4:** Whisker says to leave it powered off and cycle it yourself until a kitten weighs 3 lb.

A search of the CPSC’s recall database on November 12, 2026 found no self-cleaning litter box recalls. That’s not a guarantee, so follow the makers’ guidance either way. Our [safety explainer](https://selfcleaninglitterboxguide.com/posts/are-self-cleaning-litter-boxes-safe/) and [kitten guide](https://selfcleaninglitterboxguide.com/posts/best-self-cleaning-litter-box-for-kittens/) have more.

## The 15-lb question

PetSafe’s Canadian FAQ for the Crystal Classic says ScoopFree is designed for cats up to 15 lb. PetSafe doesn’t state a weight limit for the Crystal Smart. It uses the same disposable trays, so we treat 15 lb as the guide for both.

The Litter-Robot 4 is rated from 3 to 25 lb, with a 15.75 × 15.75 in entry. If your cat is near or above 15 lb, enter their weight in the [safety checker](https://selfcleaninglitterboxguide.com/tools/cat-safety-checker/#weight=16&model=petsafe-scoopfree-crystal-classic) and see our [large-cat guide](https://selfcleaninglitterboxguide.com/posts/best-self-cleaning-litter-box-for-large-cats/).

## Litter: crystals only vs clumping clay

The Crystal Classic and Crystal Smart work only with ScoopFree crystal trays. A cat that dislikes crystals won’t use either, and you can’t switch litters to win it over. PetSafe claims its crystals are low-dust and track less than clay.

The Litter-Robot 4 wants standard clumping clay. Whisker says some silica crystals that pass through the screen work, but white or translucent litter can confuse the level sensor.

Vets’ guidance leans toward clumping. The AAFP’s client guide says most cats prefer soft, unscented clumping litter, and many dislike aromatic or dusty litters, deodorizers and box liners. That’s worth weighing before you choose scented trays. Our [litter guide](https://selfcleaninglitterboxguide.com/posts/best-litter-for-self-cleaning-litter-boxes/) covers what works in each box.

## Multi-cat homes

Chewy’s listing says the Crystal Smart is designed for one or two cats. PetSafe describes the Classic as single or multi-cat, but more than two cats means very frequent tray changes. Whisker rates the Litter-Robot 4 for up to four. For three or more cats, the Litter-Robot is the practical choice. Our [how many litter boxes](https://selfcleaninglitterboxguide.com/tools/how-many-litter-boxes/#cats=2&auto=1) tool helps plan the rest.

## Apps and convenience

The Crystal Smart’s My PetSafe app counts visits and reminds you when the tray is due. The Classic has no app. Whisker’s app, which WIRED likes, tracks visits and weight and warns about the litter level and the drawer.

On chores, ScoopFree wins on simplicity: swap a tray once a month and you never pour litter. The Litter-Robot needs drawer emptying and litter top-ups, though Whisker’s optional LitterHopper ($129) automates refilling.

## Where the SmartSpin fits

If you like PetSafe but not crystal trays, PetSafe makes a globe-style box too. The [ScoopFree SmartSpin](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-smartspin/) is a spherical box on legs that sifts into a sealed drawer. PetSafe rates it for cats up to 25 lb and says it works with any litter, with premium clumping best. Its 6 L drawer holds up to two weeks of waste for one cat, and the Amazon listing says about weekly with two or more.

WIRED found it worked surprisingly well, but said it feels “kinda cheap.” It relies on a weight detector alone, with no laser or infrared curtain, and it sits 12 in off the floor, a climb for senior cats. It needs 2.4 GHz Wi-Fi. Kittens should wait until they’re at least 2.5 lb and 6 months old, per the Amazon listing. It costs about $340–400. Supplies: [SmartSpin liners](https://www.amazon.com/dp/B0D1VYP9P3?tag=selfcleaninglitterboxguide.com-20) and [deodorizers](https://www.amazon.com/dp/B0D5MKRSL7?tag=selfcleaninglitterboxguide.com-20).

## Who should buy which

| Your situation | Buy |
| --- | --- |
| One cat under 15 lb that likes crystals, lowest upfront cost | [ScoopFree Classic](https://www.amazon.com/dp/B0CFRY7VYN?tag=selfcleaninglitterboxguide.com-20) |
| Same, but you want app reminders | [ScoopFree Crystal Smart](https://www.amazon.com/dp/B087C7K4CP?tag=selfcleaninglitterboxguide.com-20) |
| Cat over 15 lb | [Litter-Robot 4](https://www.amazon.com/dp/B0BH6MD3DJ?tag=selfcleaninglitterboxguide.com-20) |
| Two or more cats | Litter-Robot 4, or [EVO](https://www.amazon.com/dp/B0G6GDC4VN?tag=selfcleaninglitterboxguide.com-20) for two cats under 19 lb |
| You want clumping litter and a PetSafe box | [ScoopFree SmartSpin](https://www.amazon.com/dp/B0D4GHS7V6?tag=selfcleaninglitterboxguide.com-20) |
| You never want a moving enclosure near your cat | ScoopFree Classic or Crystal Smart |

Still undecided? The [litter box matcher](https://selfcleaninglitterboxguide.com/tools/litter-box-matcher/#cats=1&budget=300&litter=crystal) filters by litter type and budget, and our [Litter-Robot alternatives](https://selfcleaninglitterboxguide.com/posts/litter-robot-alternatives/) guide covers PETKIT and open-top options.

## Verdict

Buy a ScoopFree if you have one cat under 15 lb that already likes crystal litter, and you want the cheapest, simplest box with nothing that moves around your cat. Go in knowing the trays cost about $294 a year, so over five years you’ll spend about what a Litter-Robot costs.

Buy the Litter-Robot 4 if your cat is bigger, you have more than one, or you’d rather use clumping litter. It costs more upfront, but with two cats it’s cheaper over five years, and Whisker rates it for up to four. If you have one or two average-size cats, the Litter-Robot EVO gets you the same consumables for $100 less.

[Check today’s ScoopFree Classic price](https://www.amazon.com/dp/B0CFRY7VYN?tag=selfcleaninglitterboxguide.com-20) or [Litter-Robot 4 price](https://www.amazon.com/dp/B0BH6MD3DJ?tag=selfcleaninglitterboxguide.com-20) before you buy, and see [are self-cleaning litter boxes worth it?](https://selfcleaninglitterboxguide.com/posts/are-self-cleaning-litter-boxes-worth-it/) if you’re still weighing the whole idea.

## Don't guess. Calculate.

- [🐾 Safety checker](https://selfcleaninglitterboxguide.com/tools/cat-safety-checker/): which boxes fit your cat
- [💵 Cost calculator](https://selfcleaninglitterboxguide.com/tools/litter-box-cost-calculator/): 1-, 3- and 5-year totals
- [🎯 Litter box matcher](https://selfcleaninglitterboxguide.com/tools/litter-box-matcher/): ranked for your home
- [📊 Compare every box](https://selfcleaninglitterboxguide.com/litter-boxes/): sortable spec table

## Frequently asked questions

### Is the PetSafe ScoopFree better than the Litter-Robot?
For one small-to-medium cat that likes crystal litter, the ScoopFree is cheaper to buy and has the simplest, least enclosing mechanism. For larger cats, more than two cats, or owners who want clumping litter and detailed app tracking, the Litter-Robot 4 is the better machine. Over five years with one cat, the two cost about the same once you count trays, liners, filters and litter.

### How much do ScoopFree trays cost per year?
PetSafe sells disposable trays at $73.49 for a 3-pack or $139.99 for a 6-pack. At about one tray per cat per month, which is PetSafe's guidance for one cat, that's about $280–294 a year. With two cats, a Chewy answer says a tray lasts 10–15 days, so costs roughly double or more.

### Is the PetSafe ScoopFree safe for cats?
It has the least risky mechanism of any self-cleaning box: an open tray and a rake that PetSafe says only runs when the cat is out of the box. It is designed for cats up to 15 lb, per PetSafe's Canadian FAQ. PetSafe says to keep it unplugged and scoop by hand until a kitten is 6 months old.

### Can you use regular litter in a ScoopFree?
Not in the Crystal Classic or Crystal Smart: both work only with ScoopFree crystal trays. If you want a PetSafe box that takes clumping litter, look at the ScoopFree SmartSpin, which PetSafe says works with any litter and recommends premium clumping litter.

### What's the cheapest way to get a Litter-Robot instead?
The Litter-Robot EVO, at about $599 from Whisker. It is rated for up to two cats of 3–19 lb and uses weight sensors only. It uses the same liners and carbon filters as the Litter-Robot 4, so running costs are the same.

## Sources

- [PetSafe: litter and trays](https://www.petsafe.com/shop/cat/litter-boxes-and-litter/litter/) · checked 2026-11-12 — ScoopFree disposable tray 3-pack $73.49 and 6-pack $139.99; Premium Fresh crystal litter 3-pack $66.99 for the reusable tray.
- [PetSafe: ScoopFree Crystal Smart](https://www.petsafe.com/product/smart-self-cleaning-litter-box-scoopfree/) · checked 2026-11-12 — $269.99; crystal litter only; tray change about once a month; app health counter; 27.6 × 19.1 × 6.2 in (uncovered) and 15.6 in tall front-entry.
- [PetSafe: ScoopFree Crystal Classic](https://www.petsafe.com/product/scoopfree-classic-self-cleaning-litter-box/) · checked 2026-11-12 — $99.95 on sale ($139.95 regular); safety sensors so scooping happens only when the cat isn't present; weeks between tray changes.
- [PetSafe: ScoopFree SmartSpin](https://www.petsafe.com/product/scoopfree-smartspin-self-cleaning-litter-box/) · checked 2026-11-12 — $399.99; cats up to 25 lb; 12 in from the ground; 6 L drawer up to two weeks; any litter, premium clumping best; 2.4 GHz Wi-Fi.
- [Chewy: PetSafe ScoopFree Crystal Smart listing](https://www.chewy.com/petsafe-smart-wifi-enabled-covered/dp/261382) · checked 2026-11-12 — Designed for one or two cats; Q&A answer says a tray lasts 20–30 days with one cat and 10–15 days with two.
- [Whisker: Litter-Robot 4](https://www.litter-robot.com/litter-robot-4.html) · checked 2026-11-12 — 3–25 lb, up to 4 cats, laser and weight sensors, kittens under 3 lb in semi-automatic mode, $699.
- [Whisker: Litter-Robot accessories](https://www.litter-robot.com/accessories.html) · checked 2026-11-12 — Liners 25 for $25; carbon filters 6 for $30 (one filter per cat); OdorTrap packs 6 for $30.
- [WIRED: The Best Automatic Litter Boxes](https://www.wired.com/gallery/best-automatic-cat-litter-boxes/) · checked 2026-11-12 — PetSafe SmartSpin ($340) uses a weight detector, works surprisingly well and feels cheap; WIRED doesn't recommend boxes that close completely.
- [AAFP/ISFM: House-soiling client guide](https://catvets.com/wp-content/uploads/2024/01/HouseSoiling-B&W.pdf) · checked 2026-11-12 — Most cats prefer soft, unscented clumping litter; many dislike aromatic or dusty litters, deodorizers and box liners.

## Get new guides by e-mail
One short e-mail when Self-Cleaning Litter Box Guide publishes a new guide. No spam, no sharing your address, and you can unsubscribe in one click.

 E-mail address

New posts only · Unsubscribe anytime · [Privacy](https://selfcleaninglitterboxguide.com/privacy/)

Our #1 pick
 Cheapest upfront: rake and crystal tray, no app, about $100–140 ![PetSafe ScoopFree Crystal Classic Self-Cleaning Litter Box](https://selfcleaninglitterboxguide.com/_astro/petsafe-scoopfree-crystal-classic.CJ4bZlM__Zdvfgw.webp)

### [PetSafe ScoopFree Crystal Classic Self-Cleaning Litter Box](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-crystal-classic/)
 7.8

- Rake + crystal tray
- up to 15 lb
- Up to 2 cats
- Entry stays open
The cheapest way to stop scooping, for one small-to-medium cat that accepts crystal litter.
   $$$$ Budget Price tier: Budget typical street price; check Amazon for today's
[Check price on Amazon](https://www.amazon.com/dp/B0CFRY7VYN?tag=selfcleaninglitterboxguide.com-20)[Read the full review](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-crystal-classic/)

[🐾 Safe for your cat? Check weight limits, kitten rules and cats per box in 20 seconds.](https://selfcleaninglitterboxguide.com/tools/cat-safety-checker/)[💵 What will it really cost? Liners, trays and litter over five years, model by model.](https://selfcleaninglitterboxguide.com/tools/litter-box-cost-calculator/)

## Keep reading
[Alternatives
### Litter-Robot Alternatives That Are Worth It (and Two to Skip)
The Litter-Robot alternatives worth buying in 2026: PETKIT PuraMax 2 and Max Pro 2, Neakasa M1, Lesure and ScoopFree, plus two designs we'd skip, and why.
 Updated Nov 12, 2026](https://selfcleaninglitterboxguide.com/posts/litter-robot-alternatives/)[Cost
### Are Self-Cleaning Litter Boxes Worth It? Costs, Trade-Offs and Who Should Skip One
An honest look at whether a self-cleaning litter box is worth it: five-year costs, real pros and cons, health tracking, and which cats should skip one.
 Updated Nov 12, 2026](https://selfcleaninglitterboxguide.com/posts/are-self-cleaning-litter-boxes-worth-it/)[Budget
### The Best Budget Self-Cleaning Litter Boxes Under $400 (2026)
The best self-cleaning litter boxes under about $400: PuraMax 2, Lesure, ScoopFree and Neakasa M1, plus why crystal trays can cost more than the box over time.
 Updated Nov 12, 2026](https://selfcleaninglitterboxguide.com/posts/best-budget-self-cleaning-litter-box/)

 Cheapest upfront: rake and crystal tray, no app, about $100–140 ScoopFree Classic $$$$ Budget Price tier: Budget
[Check price](https://www.amazon.com/dp/B0CFRY7VYN?tag=selfcleaninglitterboxguide.com-20)