# PETKIT Purobot Ultra vs Litter-Robot 5: Which to Buy > PETKIT Purobot Ultra vs Litter-Robot 5: cat limits, entry size, auto-bagging, cameras, Whisker+ and five-year running costs, and which flagship fits your… - Source: https://selfcleaninglitterboxguide.com/posts/petkit-purobot-ultra-vs-litter-robot-5/ - Markdown version: https://selfcleaninglitterboxguide.com/posts/petkit-purobot-ultra-vs-litter-robot-5.md - Last updated: 2026-11-12 --- - [Home](https://selfcleaninglitterboxguide.com/) - [Guides](https://selfcleaninglitterboxguide.com/guides/) - PETKIT Purobot Ultra vs Litter-Robot 5: Self-Bagging Camera Box or Big-Cat Globe? Flagship face-off # PETKIT Purobot Ultra vs Litter-Robot 5: Self-Bagging Camera Box or Big-Cat 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 - For most homes the **Litter-Robot 5** is the stronger flagship: up to five cats from 3 to 30 lb, a 15.75 × 15.75 in entry, and laser plus weight sensors (Whisker). It lists at $799 at Whisker. - The **PETKIT Purobot Ultra** (about $800) wins on convenience: it seals full bags and loads a new one itself, and it films every visit. WIRED gave it 8/10 but found it hard to refill and kind of cramped inside. - Neither maker or review we found confirms that the entry stays open through the whole cycle, and we couldn't confirm the Ultra's entry size. **Weigh and measure your cat first.** - With our default assumptions, five years with one cat costs about **$1,684 for the LR5** and **$1,803 for the Ultra**, box included. The LR5's WasteID and cat ID need Whisker+, roughly $400 more over five years. - At these prices most buyers should also look at the **Litter-Robot 4**, **EVO** or **Purobot Max Pro 2**, which cost less. ## Our top picks - 1![Whisker Litter-Robot 5](https://selfcleaninglitterboxguide.com/_astro/whisker-litter-robot-5.JMut0Qu8_Z1BLhyu.webp)Best for big cats and multi-cat homes: up to five cats, 3–30 lb, laser and weight sensors, $799 at Whisker[Whisker Litter-Robot 5](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-5/)Rotating globe · 3–30 lb · up to 5 cats8.5**$$$**$PremiumPrice tier: Premium[Check price on Amazon](https://www.amazon.com/dp/B0HN8C8TFM?tag=selfcleaninglitterboxguide.com-20) - 2![PETKIT Purobot Ultra](https://selfcleaninglitterboxguide.com/_astro/petkit-purobot-ultra.Ca4bd3Io_2hF3AS.webp)Best for gadget fans: bags its own waste and films every visit, about $800[PETKIT Purobot Ultra](https://selfcleaninglitterboxguide.com/litter-boxes/petkit-purobot-ultra/)Tilting drum · 3.3–22 lb · cats: not stated7.9**$$$$**FlagshipPrice tier: Flagship[Check price](https://www.amazon.com/dp/B0DFYJ29XG?tag=selfcleaninglitterboxguide.com-20) - 3![PETKIT Purobot Max Pro 2](https://selfcleaninglitterboxguide.com/_astro/petkit-purobot-max-pro-2.tJpodhLt_Zt19WQ.webp)The better-value PETKIT: camera and a 43% larger entry than earlier PETKIT boxes, about $500–550[PETKIT Purobot Max Pro 2](https://selfcleaninglitterboxguide.com/litter-boxes/petkit-purobot-max-pro-2/)Tilting drum · 3.3–22 lb · cats: not stated8.6**$$**$$Mid-rangePrice tier: Mid-range[Check price](https://www.amazon.com/dp/B0DFYLFFG1?tag=selfcleaninglitterboxguide.com-20) ### On this page 11 sections - [PETKIT Purobot Ultra vs Litter-Robot 5 at a glance](#petkit-purobot-ultra-vs-litter-robot-5-at-a-glance) - [Cat size and cat count decide the winner](#cat-size-and-cat-count-decide-the-winner) - [Safety: two open questions](#safety-two-open-questions) - [What the Ultra does that the LR5 doesn’t](#what-the-ultra-does-that-the-lr5-doesnt) - [What the LR5 does that the Ultra doesn’t](#what-the-lr5-does-that-the-ultra-doesnt) - [Running costs](#running-costs) - [Buying guide: how to choose](#buying-guide-how-to-choose) - [Who should skip both](#who-should-skip-both) - [Buying now, with Black Friday around the corner](#buying-now-with-black-friday-around-the-corner) - [Verdict](#verdict) - [FAQ](#faq) ## Before you choose - [Litter-Robot 5 vs Litter-Robot 4 vs EVO: Which Litter-Robot to Buy in 2026](https://selfcleaninglitterboxguide.com/posts/litter-robot-5-vs-litter-robot-4-vs-evo/) - [Litter-Robot Alternatives That Are Worth It (and Two to Skip)](https://selfcleaninglitterboxguide.com/posts/litter-robot-alternatives/) - [The Best Self-Cleaning Litter Box for Large Cats in 2026](https://selfcleaninglitterboxguide.com/posts/best-self-cleaning-litter-box-for-large-cats/) The [Litter-Robot 5](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-5/) is the better flagship for most homes, and the [PETKIT Purobot Ultra](https://selfcleaninglitterboxguide.com/litter-boxes/petkit-purobot-ultra/) is the better gadget. In the PETKIT Purobot Ultra vs Litter-Robot 5 matchup, the two cost about the same, roughly $800. The Whisker globe is rated for five cats and 30 lb, while the PETKIT drum seals its own waste bags and films every visit. We haven’t tested either box ourselves. This comparison uses maker specs from Whisker, Amazon listing text and WIRED’s reporting, which we name wherever a test result appears. Prices are typical street prices from dated sources, not live Amazon prices, so check today’s price before you buy. ## PETKIT Purobot Ultra vs Litter-Robot 5 at a glance | | [Litter-Robot 5](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-5/) | [Purobot Ultra](https://selfcleaninglitterboxguide.com/litter-boxes/petkit-purobot-ultra/) | | --- | --- | --- | | Typical price | $799 at Whisker; Amazon sells a bundle (price not captured) | About $800 (WIRED’s Amazon price box); bundles about $762–$802 | | Mechanism | Rotating globe | Tilting drum | | Cat weight (maker) | 3–30 lb | 3.3–22 lb, and 6 months or older | | Cats per unit | Up to 5 (Whisker) | No number given | | Entry | 15.75 × 15.75 in, 17.5 in interior | Not confirmed; WIRED: “kind of cramped” | | Sensors | Multiple lasers, weight sensors, anti-obstruction detection | Weight, proximity and an AI camera on a swiveling arm | | Camera | No (LR5 Pro, $999, has dual AI cameras) | Yes, night vision, two-way audio, stool snapshots | | Auto-bagging | No | Yes, seals the bag and loads a new one | | Size and weight | 22 × 27 in, 29.9 in tall, 28.7 lb | 20.87 × 26.77 in, 32.68 in tall, 46 lb | | Wi-Fi | Wi-Fi (Whisker app) | 2.4 GHz and 5 GHz | | Subscription | Whisker+ (about $80 a year, per WIRED) for WasteID and cat ID | None confirmed | | Warranty | 1-year WhiskerCare; 3 years in the Amazon bundle | 2 years per the Amazon listing | Every other box we track is in the [comparison chart](https://selfcleaninglitterboxguide.com/litter-boxes/). ## Cat size and cat count decide the winner The Litter-Robot 5 has the higher limits on both counts. Whisker rates it for up to five cats from 3 to 30 lb, with a 15.75 × 15.75 in entry and 17.5 in of interior height. PETKIT recommends the Ultra for cats from 3.3 to 22 lb. It publishes no cats-per-unit figure, though the Ultra’s camera recognizes cats by face, which helps in a multi-cat home. The Ultra’s entry is the open question. We couldn’t confirm its size from PETKIT, so our [cat safety checker](https://selfcleaninglitterboxguide.com/tools/cat-safety-checker/#model=petkit-purobot-ultra) can check weight and age but can’t size the doorway. WIRED’s description of the interior as “kind of cramped” is the only clue we have, and it points the wrong way for a long or heavy cat. If your cat is over about 15 lb, treat the Ultra as unproven for your cat until you can see the entry measurement. Our [large-cat guide](https://selfcleaninglitterboxguide.com/posts/best-self-cleaning-litter-box-for-large-cats/) and [multi-cat guide](https://selfcleaninglitterboxguide.com/posts/best-self-cleaning-litter-box-for-multiple-cats/) cover the alternatives. Which cat weights each box allows (lb) Maker ranges for automatic mode. Below the left end, the sensors may not notice your cat; hatched bars have no published minimum. Hooded globe / drum Open-top Rake / other [Leo's Loo Too 1–20](https://selfcleaninglitterboxguide.com/litter-boxes/casa-leo-leos-loo-too/)[Neakasa M1 2.2–33](https://selfcleaninglitterboxguide.com/litter-boxes/neakasa-m1/)[ScoopFree SmartSpin 2.5–25](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-smartspin/)[Litter-Robot 5 3–30](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-5/)[Litter-Robot 4 3–25](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-4/)[Litter-Robot EVO 3–19](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-evo/)[Purobot Ultra 3.3–22](https://selfcleaninglitterboxguide.com/litter-boxes/petkit-purobot-ultra/)[Purobot Max Pro 2 3.3–22](https://selfcleaninglitterboxguide.com/litter-boxes/petkit-purobot-max-pro-2/)[PuraMax 2 3.3–22](https://selfcleaninglitterboxguide.com/litter-boxes/petkit-puramax-2/)[Furbulous Self-Packing 3.3–22](https://selfcleaninglitterboxguide.com/litter-boxes/furbulous-self-packing/)[Lesure Open-Top 3.3–18](https://selfcleaninglitterboxguide.com/litter-boxes/lesure-open-top/)[ELS PET Orbitie ?–21](https://selfcleaninglitterboxguide.com/litter-boxes/els-pet-orbitie/)[ScoopFree Classic ?–15](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-crystal-classic/)[ScoopFree Crystal Smart ?–?](https://selfcleaninglitterboxguide.com/litter-boxes/petsafe-scoopfree-crystal-smart/) 05101520253035 Kittens under the minimum should use the box with automatic cleaning off. Check your own cat in the [safety checker](https://selfcleaninglitterboxguide.com/tools/cat-safety-checker/). ## Safety: two open questions This section matters more than any feature on the spec sheet. For the background, read [are self-cleaning litter boxes safe?](https://selfcleaninglitterboxguide.com/posts/are-self-cleaning-litter-boxes-safe/). Litter-Robot 5. Whisker’s SafeCat system with OmniSense uses multiple lasers, weight sensors and anti-obstruction detection to spot a cat and stop the cycle. That is more layers than the Ultra lists. What we can’t confirm is whether the entry stays open for the whole cycle. Neither Whisker’s page nor a named review in our sources says so, and the LR5 isn’t one of the boxes WIRED confirms stay open. We’d expect it to behave like the [Litter-Robot 4](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-4/), which is one of those picks, but we won’t state that as fact. Purobot Ultra. PETKIT and WIRED describe weight and proximity sensors working alongside the camera. Open entry during the cycle isn’t confirmed for the Ultra either. Because both are unconfirmed, the practical advice is the same: weigh your cat, stay within the minimums, keep a regular box out during the switch, and watch the first cycles. Use our [transition guide](https://selfcleaninglitterboxguide.com/posts/how-to-transition-cat-to-automatic-litter-box/) to do it gradually. ### Kittens and small cats - **Litter-Robot 5:** Whisker says a kitten under 3 lb should use it powered off, with cycles started by hand, until it reaches 3 lb. - **Purobot Ultra:** PETKIT recommends it for cats at least 6 months old and at least 3.3 lb, per the Amazon listing. ## What the Ultra does that the LR5 doesn’t ### Auto-bagging This is the Ultra’s main selling point. When the bag is full, the box seals it and loads a new one, so emptying is lifting out a sealed bag. The Litter-Robot 5 has a sealed, lined drawer but no auto-bagging, so you lift out and tie off the liner yourself. WIRED found the Ultra kept smells at bay. ### The camera The Ultra films visits with night vision and two-way audio, takes stool snapshots after each cycle and recognizes multiple cats by face. WIRED found the video black-and-white and low detail and the analytics flat. It’s fun to check, but we wouldn’t buy it for health monitoring. The Litter-Robot 5 has no camera. If you want one in the Whisker range, the LR5 Pro costs $999 and has dual AI cameras, and WIRED says its AI needs Whisker+ to work reliably. That is a $200 jump over the LR5 before any subscription. ## What the LR5 does that the Ultra doesn’t ### WasteID WasteID times cycles differently for urine and stool and logs which is which. In WIRED’s testing it, and weight-based cat identification, worked only intermittently for the first four months, then improved markedly after firmware updates. Both need Whisker+, about $80 a year per WIRED. Without the subscription you still have a capable cleaning robot. ### Size and refilling The Ultra is 46 lb and about 33 in tall, far heavier than the LR5’s 28.7 lb. WIRED also found the Ultra hard to refill with litter because the camera arm gets in the way. The LR5 is 29.9 in tall on a 22 × 27 in footprint, so measure your space either way. WIRED’s tester found the LR5’s touchscreen finicky and preferred the LR4’s physical buttons. ### Litter and emptying Both take clumping litter. Whisker recommends clumping clay for the LR5, and PETKIT sells tofu and mixed litters for the Ultra, which gives a little more choice. In WIRED’s testing the LR5 held about 10 days of waste from two cats. See our [litter guide](https://selfcleaninglitterboxguide.com/posts/best-litter-for-self-cleaning-litter-boxes/) for specific picks. ## Running costs These are our default assumptions, not measured figures: about 10 lb of clumping litter per cat per month at Dr. Elsey’s Chewy price ($0.57 a pound), plus each maker’s consumables. The LR5 uses Whisker’s liners ($25 for 25) and one $5 carbon filter per cat per month. The Ultra uses PETKIT’s own bag rings and an odor eliminator at $20 for three refills (WIRED). We couldn’t confirm PETKIT’s bag-ring price, so we use Whisker’s $1-per-liner price as a stand-in. | Default assumptions | Litter-Robot 5 | Purobot Ultra | | --- | --- | --- | | Per year, one cat, with litter | About $177 | About $201 | | Five years, one cat, box included | About $1,684 | About $1,803 | | Five years, two cats, box included | About $2,569 | About $2,406 | | Whisker+ if you subscribe | About $400 more over five years | Not applicable | Two things stand out. The Ultra costs less to run with two cats because the LR5’s per-cat liners and filters add up, and the LR5 costs more once Whisker+ is on. The Amazon bundle includes six months of Whisker+, which trims that. Enter your own prices in the [cost calculator](https://selfcleaninglitterboxguide.com/tools/litter-box-cost-calculator/#cats=2&years=5). 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/). ## Buying guide: how to choose - **Weigh your cat first.** Over 22 lb rules out the Ultra by PETKIT’s own rating. Over 25 lb leaves the LR5 as the only hooded box we cover with a rating that high. - **Count the cats.** Three or more points to Whisker’s published ratings (up to five on the LR5). Use the [box calculator](https://selfcleaninglitterboxguide.com/tools/how-many-litter-boxes/#cats=3&auto=1) to see how many boxes you need, because a robot doesn’t replace the n+1 rule. - **Decide whether you want a camera.** If yes and your budget is about $800, the Ultra is the one with a camera. If you want a camera for less, see the Max Pro 2 below. - **Think about emptying.** If handling a waste bag is what you dread, auto-bagging is the Ultra’s real advantage. - **Check for a subscription.** The LR5’s best features need Whisker+. The Ultra’s listing doesn’t mention one. - **Measure the space.** The Ultra is 46 lb and about 33 in tall. Place either box where you won’t need to move it. Not sure? The [litter box matcher](https://selfcleaninglitterboxguide.com/tools/litter-box-matcher/#cats=2&budget=900) narrows the list from your cats and budget. ## Who should skip both At about $800 each, these are the most expensive boxes we cover, and neither is the value pick. - **One or two cats under 19 lb:** the [Litter-Robot EVO](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-evo/) costs about $599 and does the core job in less space. - **Up to four cats or a cat up to 25 lb:** the Litter-Robot 4 costs about $699–749 and matches the LR5’s entry. See [Litter-Robot 5 vs 4 vs EVO](https://selfcleaninglitterboxguide.com/posts/litter-robot-5-vs-litter-robot-4-vs-evo/). - **You want a camera but not an $800 price:** the [Purobot Max Pro 2](https://selfcleaninglitterboxguide.com/litter-boxes/petkit-purobot-max-pro-2/) is WIRED’s current favorite, with a 10.51 × 10.74 in entry (43% larger than the previous PETKIT generation) and a 1080p camera for about $500–550. It doesn’t bag its own waste. - **You’d rather pay half as much:** the PuraMax 2 and others are in our [Litter-Robot alternatives](https://selfcleaninglitterboxguide.com/posts/litter-robot-alternatives/) guide. ## Buying now, with Black Friday around the corner Retailers have begun early sales. We can’t promise a discount on either box, and prices move week to week. Compare the maker’s store with Amazon, and read our [Black Friday deals guide](https://selfcleaninglitterboxguide.com/posts/self-cleaning-litter-box-black-friday-deals/) before paying full price. Whisker’s Amazon listing is a bundle that includes a three-year warranty, so compare it with the $799 robot-only price rather than assuming the cheaper number is the better deal. Useful extras: [Dr. Elsey’s Ultra clumping clay](https://www.amazon.com/dp/B0009X29WK?tag=selfcleaninglitterboxguide.com-20), [Whisker drawer liners](https://www.amazon.com/dp/B0F3QTK9ZT?tag=selfcleaninglitterboxguide.com-20) for the LR5, and a [Gorilla Grip 35 × 23 in mat](https://www.amazon.com/dp/B07HKN7HMP?tag=selfcleaninglitterboxguide.com-20) in front of either box. For the Ultra, buy PETKIT’s own bag rings and odor refills, because its standard bag rolls and N50 refill don’t fit it. ## Verdict Buy the Litter-Robot 5 if you have a big cat, several cats, or want a box with the highest published limits and Whisker’s laser-and-weight sensing. Accept a subscription for WasteID, a touchscreen WIRED found finicky and a bundle-only Amazon listing. [Check the Litter-Robot 5 price](https://www.amazon.com/dp/B0HN8C8TFM?tag=selfcleaninglitterboxguide.com-20). Buy the PETKIT Purobot Ultra if self-bagging and a camera on every visit are what you want, your cat is average-size, and you have room for a 46 lb box. Expect proprietary refills and an awkward refill because of the camera arm. [Check the Purobot Ultra price](https://www.amazon.com/dp/B0DFYJ29XG?tag=selfcleaninglitterboxguide.com-20). If neither feature is a must-have, save $100–300 on the Litter-Robot 4, EVO or Purobot Max Pro 2. Once you’re set up, our [troubleshooting guide](https://selfcleaninglitterboxguide.com/posts/automatic-litter-box-troubleshooting/) covers ghost-cat errors and drawer-full alerts for both. ## 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 PETKIT Purobot Ultra better than the Litter-Robot 5? Only for specific wants. The Ultra seals and replaces its own waste bag and films every visit. The Litter-Robot 5 is rated for up to five cats from 3 to 30 lb with a 15.75 × 15.75 in entry, while PETKIT rates the Ultra for 3.3 to 22 lb and WIRED found its interior kind of cramped. For big cats, several cats or a smaller footprint to live with, the Litter-Robot 5 is the safer buy. ### How much do the Purobot Ultra and Litter-Robot 5 cost? The Litter-Robot 5 is $799 at Whisker (November 12, 2026), and on Amazon it is sold only as the Protection & Insights Bundle, whose price we couldn't capture. WIRED's review page showed the Purobot Ultra at $800 at Amazon the same day, with Amazon bundle listings at about $762–$802. Prices change often, so check both before you buy. ### Does the Litter-Robot 5 need a subscription? Not to clean. WasteID, which separates urine from stool visits, and cat identification need Whisker+, which WIRED puts at about $80 a year. The Amazon bundle includes six months of Whisker+ and a three-year warranty. ### Does the Purobot Ultra bag its own waste? Yes. When the bag is full, the Ultra seals it and loads a new one automatically, so emptying means lifting out a sealed bag. It needs PETKIT's own bag rings and odor-eliminator refills, and PETKIT says its N50 refill doesn't fit. ### Which is better for a large cat, the Purobot Ultra or the Litter-Robot 5? The Litter-Robot 5. Whisker rates it to 30 lb, with a 15.75 × 15.75 in entry and 17.5 in of interior height. PETKIT rates the Ultra to 22 lb, we couldn't confirm its entry size, and WIRED found it kind of cramped. A big cat in either box should be checked in our cat safety checker first. ### Can kittens use the Purobot Ultra or Litter-Robot 5? Not in automatic mode until they reach the minimums. Whisker says to keep the Litter-Robot 5 powered off and cycle it by hand until a kitten weighs 3 lb. PETKIT recommends the Ultra for cats at least 6 months old and 3.3 lb. Keep a regular box available in the meantime. ## Sources - [Whisker: Litter-Robot 5](https://www.litter-robot.com/litter-robot-5.html) · checked 2026-11-12 — 3–30 lb, up to 5 cats, 15.75 × 15.75 in entry, 17.5 in interior, 22 × 27 in footprint, 29.9 in tall, 28.7 lb, multiple lasers plus weight sensors, WasteID, $799; LR5 Pro $999 with dual AI cameras. - [WIRED: The Best Automatic Litter Boxes](https://www.wired.com/gallery/best-automatic-cat-litter-boxes/) · checked 2026-11-12 — LR5 WasteID intermittent for four months then improved; WIRED preferred the LR4's buttons to the LR5's touchscreen; Whisker+ about $80 a year; WIRED only recommends boxes that stay open during cycling. - [Amazon: Litter-Robot 5 Protection & Insights Bundle](https://www.amazon.com/dp/B0HN8C8TFM?tag=selfcleaninglitterboxguide.com-20) · checked 2026-11-12 — Bundle with a 3-year warranty and 6 months of Whisker+; up to 5 cats of 3–30 lb; first available October 16, 2026. - [Whisker: Litter-Robot accessories](https://www.litter-robot.com/accessories.html) · checked 2026-11-12 — Liners 25 for $25, carbon filters 6 for $30, OdorTrap 6 for $30. ## 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 Best for big cats and multi-cat homes: up to five cats, 3–30 lb, laser and weight sensors, $799 at Whisker ![Whisker Litter-Robot 5](https://selfcleaninglitterboxguide.com/_astro/whisker-litter-robot-5.JMut0Qu8_EdAxV.webp) ### [Whisker Litter-Robot 5](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-5/) 8.5 - Rotating globe - 3–30 lb - Up to 5 cats Big and multi-cat households (up to five cats, up to 30 lb) that want health data on top of hands-off scooping. $$$$ Premium Price tier: Premium typical street price; check Amazon for today's [Check price on Amazon](https://www.amazon.com/dp/B0HN8C8TFM?tag=selfcleaninglitterboxguide.com-20)[Read the full review](https://selfcleaninglitterboxguide.com/litter-boxes/whisker-litter-robot-5/) [🐾 Safe for your cat? Check weight limits, kitten rules and cats per box in 20 seconds.](https://selfcleaninglitterboxguide.com/tools/cat-safety-checker/)[💵 What will it really cost? Liners, trays and litter over five years, model by model.](https://selfcleaninglitterboxguide.com/tools/litter-box-cost-calculator/) ## Keep reading [Which to buy ### Litter-Robot 5 vs Litter-Robot 4 vs EVO: Which Litter-Robot to Buy in 2026 Litter-Robot 5 vs 4 vs EVO: weight and cat limits, entry sizes, sensors, WasteID and Whisker+, prices and running costs, and which Litter-Robot fits your home. Updated Nov 12, 2026](https://selfcleaninglitterboxguide.com/posts/litter-robot-5-vs-litter-robot-4-vs-evo/)[Alternatives ### Litter-Robot Alternatives That Are Worth It (and Two to Skip) The Litter-Robot alternatives worth buying in 2026: PETKIT PuraMax 2 and Max Pro 2, Neakasa M1, Lesure and ScoopFree, plus two designs we'd skip, and why. Updated Nov 12, 2026](https://selfcleaninglitterboxguide.com/posts/litter-robot-alternatives/)[Large cats ### The Best Self-Cleaning Litter Box for Large Cats in 2026 The best self-cleaning litter boxes for big cats, compared on what matters: maker weight limits, entry size, interior height, step-up height and open tops. Updated Nov 12, 2026](https://selfcleaninglitterboxguide.com/posts/best-self-cleaning-litter-box-for-large-cats/) Best for big cats and multi-cat homes: up to five cats, 3–30 lb, laser and weight sensors, $799 at Whisker Litter-Robot 5 $$$$ Premium Price tier: Premium [Check price](https://www.amazon.com/dp/B0HN8C8TFM?tag=selfcleaninglitterboxguide.com-20)