Skip to content
KeenTier.net
Self Cleaning Litter Boxes

Looking Beyond the PetSafe ScoopFree OpenSky Self-Cleaning Litter? 6 Alternatives Worth a Look

November 3, 2026 6 min read

Specs below are quoted from each Amazon listing. Scores are out of 10, based on listed specifications and buyer feedback. Nothing on this page was handled or measured by us.

As Amazon Associates, we earn from qualifying purchases. This means we may receive a small commission at no extra cost to you if you click through and make a purchase.

As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.

The PetSafe ScoopFree OpenSky Large stands out for its sealed waste drawer and app-based health monitoring. It offers strong odor control and an open-top design that many cats prefer. If you are looking for petsafe scoopfree opensky self cleaning litter alternatives, you might want different dimensions or connectivity options. Some buyers need a lighter unit or support for 5GHz Wi-Fi instead of 2.4GHz. Others may prefer a lower entry point for older cats or specific safety sensors.

We selected 6 alternatives that share key specifications with the OpenSky. These models also feature app control, health tracking, and open-top designs. They vary in weight, size, and connectivity standards to suit different home environments. You can choose based on your cat’s size and your home’s network setup. This list focuses on practical specs rather than marketing claims. Each option provides a clear path to automated litter management with distinct advantages.

Comparing top litter box alternatives

Lohhuby Large Open-Top Automatic Litter Box

The Lohhuby Large Open-Top Automatic Litter Box shares the OpenSky’s app control and open-top design, but it weighs 18 pounds compared to the PetSafe’s 29.6 pounds. This lighter build may suit owners who need easier mobility. Both units offer health monitoring and 2.4 GHz Wi-Fi connectivity. However, the Lohhuby lacks the sealed waste drawer found in the PetSafe model, which means odor containment relies on different mechanisms. It includes anti-pinch protection for safety. You should choose this alternative if you prioritize a lighter unit and open access for kittens or medium cats over the PetSafe’s superior odor-sealing waste drawer.

Ellenpent Open-Top Large Litter Box

The Ellenpent Open-Top Large Litter Box is significantly lighter at 17.1 pounds than the PetSafe OpenSky’s 29.6 pounds. It also features waterproof and weatherproof attributes, which the PetSafe does not list. Both provide app control and safety sensors, though the PetSafe uses a specific exit-sensing technology. The Ellenpent lacks the sealed waste drawer that traps odors in the PetSafe unit. Its dimensions are slightly smaller in length. This alternative fits multi-cat households or owners of large cats who value sensor safety and app monitoring. You might prefer this if you need a lighter, weather-resistant unit and do not require the PetSafe’s specific odor-trapping waste drawer.

Mintakawa Large App-Control Litter Box

The Mintakawa Large App-Control Litter Box weighs 21.4 pounds, lighter than the PetSafe OpenSky. It shares the app control and health tracking features. However, it lacks the sealed waste drawer and deodorizer system that provide the PetSafe with its enhanced odor control. The Mintakawa focuses on quiet operation and anti-pinch protection. It is not suitable for larger breeds. You should pick this alternative if you own small to medium cats under 15 pounds and prioritize quiet performance and health tracking over the PetSafe’s heavy-duty odor containment and larger waste capacity. The open-top design is common to both.

CATLINK Open-X Large White

The CATLINK Open-X Large White supports dual-band Wi-Fi, including 5 GHz, whereas the PetSafe OpenSky is limited to 2.4 GHz. Both offer app control, health monitoring, and an open-top design. The CATLINK unit weighs 21.4 pounds, which is lighter than the PetSafe’s 29.6 pounds. It lacks the sealed waste drawer and integrated deodorizer found in the PetSafe model. This alternative is ideal for multi-cat households needing reliable dual-band connectivity. You should choose the CATLINK if you prioritize network flexibility and an open entrance for cat comfort over the PetSafe’s superior odor-sealing waste management system.

Meowant 75L Open-Top Self-Cleaning Litter Box

The Meowant 75L Open-Top Self-Cleaning Litter Box weighs only 16.5 pounds, much lighter than the PetSafe OpenSky. It features a low-entry design, which the PetSafe does not have, making it easier for smaller or mobility-limited cats to enter. Both units offer app control, safety sensors, and health monitoring. However, the Meowant lacks the sealed waste drawer and deodorizer that provide the PetSafe with strong odor control. It is suitable for multiple cats. You should select this alternative if you prioritize easy entry and a lightweight unit for smaller cats over the PetSafe’s robust odor containment and heavier build.

ZHMZ G1 Large Self-Cleaning Litter Box

The ZHMZ G1 Large Self-Cleaning Litter Box is the heaviest option at 33 pounds, compared to the PetSafe OpenSky’s 29.6 pounds. It shares app control, health tracking, and anti-pinch protection features. However, it does not list a sealed waste drawer or specific odor control technology like the PetSafe’s deodorizer. It is suitable for multiple cats and focuses on odor containment for indoor environments. You should choose this alternative if you prioritize a sturdy, heavy unit and smart health tracking for smaller, indoor cats over the PetSafe’s specific sealed waste drawer and 2.4 GHz Wi-Fi limitation.

#ProductBest forPrice
1PetSafe ScoopFree OpenSky Large Best overallhealth tracking and odor containment
2Lohhuby Large Open-Top Automatic Litter Box Best budgetKittens and medium cats needing open access
3Ellenpent Open-Top Large Litter Box Best premiumlarge cats and health tracking
4Mintakawa Large App-Control Litter Box Also greatsmall to medium cats under 15 lbs
5CATLINK Open-X Large White Best wi-fimulti-cat households needing health tracking
6Meowant 75L Open-Top Self-Cleaning Litter Box Best low-entrysmaller cats needing low-entry access
7ZHMZ G1 Large Self-Cleaning Litter Box Also greatsmaller cats and odor-sensitive homes
1Best overall
PetSafe ScoopFree OpenSky Large

PetSafe ScoopFree OpenSky Large

Best for: health tracking and odor containment

Design Type
Open-top
Connectivity
2.4 GHz Wi-Fi
Health Tracking
Cat weight, litter box usage
Odor Control
Sealed waste drawer, deodorizer
Waste Drawer Capacity
8.5L, up to 2 weeks
Color
White

The PetSafe ScoopFree OpenSky is a large, open-top automatic litter box designed for multi-cat households. It features an 8.5L sealed waste drawer that holds up to two weeks of waste for one cat. The unit includes Wi-Fi connectivity for app control and health monitoring. Its open design helps reduce feline fear, while the sealed drawer and deodorizer manage odors effectively.

Pros
  • 8.5L sealed waste drawer holds up to two weeks of waste
  • Open-top design reduces cat fear and allows natural movement
  • Wi-Fi app control tracks cat weight and litter box usage
  • Integrated deodorizer and sealed drawer provide enhanced odor control
Cons
  • 29.6-pound weight makes it bulkier than many competitors
  • 8.5L waste capacity is smaller than 75L extra-large models
  • 2.4 GHz Wi-Fi limits connectivity compared to dual-band options
Good fit if
  • You want an open-top design to reduce your cat's anxiety
  • You need health tracking for weight and usage data
  • You prefer sealed waste drawers for odor containment
Skip if
  • You need a compact unit under 20 pounds
  • You require a waste capacity larger than 8.5 liters
  • You want a dual-band Wi-Fi connection

Verdict: PetSafe ScoopFree OpenSky Large suits owners who prioritize health monitoring and odor containment in a spacious, open-top unit. It fits multi-cat homes where weight and size are secondary to waste management features.

2Best budget
Lohhuby Large Open-Top Automatic Litter Box

Lohhuby Large Open-Top Automatic Litter Box

Best for: Kittens and medium cats needing open access

Design Type
Open-top
Connectivity
2.4GHz Wi-Fi
Safety Sensors
Anti-pinch
Suitable For
Kittens
Safety Features
Anti-Pinch Protection
Health Tracking
Health Monitoring

The Lohhuby automatic litter box features a large open-top design for easy access. It connects via 2.4GHz Wi-Fi for app control and includes anti-pinch safety sensors. Weighing 18 pounds, it measures 20.7 by 20.7 by 15 inches. This unit suits kittens and medium cats. It offers health monitoring and simple maintenance by lifting the inner drum.

Pros
  • Open-top design allows easy access for cats.
  • App control manages cleaning schedules remotely.
  • Anti-pinch sensors halt operation if touched.
  • Health monitoring tracks pet metrics.
  • Inner drum lifts out for quick cleaning.
Cons
  • Weighs 18 pounds, making it heavier than many competitors.
  • Supports only 2.4GHz Wi-Fi, excluding 5GHz networks.
  • Dimensions are 20.7 by 20.7 by 15 inches, which is narrower than some large models.
Good fit if
  • You want an open-top design for easy cat access.
  • You need app control for remote monitoring.
  • You have a kitten or medium-sized cat.
Skip if
  • You require 5GHz Wi-Fi connectivity.
  • You need a unit lighter than 18 pounds.
  • You prefer a closed-top design for odor containment.

Verdict: Lohhuby Large Open-Top Cat Litter Box fits owners of kittens or medium cats who prioritize open access and app management. Its 18-pound build and 2.4GHz connectivity suit those who do not need 5GHz support or a lighter unit.

3Best premium
Ellenpent Open-Top Large Litter Box

Ellenpent Open-Top Large Litter Box

Best for: large cats and health tracking

Design Type
open-top
Connectivity
2.4GHz Wi-Fi
Safety Sensors
infrared, weight sensors
Health Tracking
usage, health patterns
Odor Control
sealed cover, deodorizer gel
Waste Drawer Capacity
9L, up to 10 days

The Ellenpent is a large, open-top automatic litter box designed for cats who prefer visibility. It features a 9L waste drawer that holds up to 10 days of waste for one cat. You get app control via 2.4GHz Wi-Fi to monitor usage and health patterns. Infrared and weight sensors pause cleaning if your cat re-enters. The sealed cover and deodorizer gel help manage odors.

Pros
  • 9L waste drawer holds up to 10 days of waste for one cat
  • Open-top design offers greater visibility and freedom of movement
  • Infrared and weight sensors pause cleaning when your cat is near
  • App control tracks usage and health patterns via 2.4GHz Wi-Fi
  • Arrives fully assembled for immediate use
Cons
  • 9L waste capacity may require more frequent emptying than larger competitors
  • 17.1-pound weight makes it heavier and less portable than some alternatives
  • 2.4GHz Wi-Fi only, excluding 5GHz network connectivity
Good fit if
  • You have a large cat who needs an open-top design
  • You want app-based health tracking and usage monitoring
  • You prefer a sealed odor control system with deodorizer gel
Skip if
  • You need 5GHz Wi-Fi connectivity
  • You want a waste capacity larger than 9 liters
  • You prefer a compact unit under 17 pounds

Verdict: The Ellenpent Large Open-Top Litter Box fits multi-cat households or owners of large cats who value open access and health tracking. It suits you if you prioritize sensor safety and app monitoring over maximum waste capacity.

4Also great
Mintakawa Large App-Control Litter Box

Mintakawa Large App-Control Litter Box

Best for: small to medium cats under 15 lbs

Connectivity
2.4GHz Wi-Fi, Bluetooth
Cat Weight Range
3.5–15 lbs
Safety Sensors
Anti-pinch
Health Tracking
Weight, visit duration, frequency
Suitable For
Kittens
Safety Features
Anti-Pinch Protection

This Mintakawa unit is a large, white automatic litter box designed for cats weighing between 3.5 and 15 lbs. It connects via 2.4GHz Wi-Fi and Bluetooth to an app that tracks weight, visit duration, and frequency. The drum operates quietly at under 35 dB. You can remove the drum for easy cleaning. Assembly takes about 30 minutes.

Pros
  • Tracks cat weight, visit duration, and frequency via app
  • Operates at under 35 dB for low noise
  • Drum is removable and washable for simple cleaning
  • Includes anti-pinch safety sensors
Cons
  • Maximum cat weight limit is 15 lbs
  • Requires 30 minutes for assembly
  • Weighs 21.4 pounds
Good fit if
  • You have a cat under 15 lbs
  • You want health tracking data in an app
  • You prefer quiet operation under 35 dB
Skip if
  • You have a cat over 15 lbs
  • You want a pre-assembled unit
  • You need app control for cats over 15 lbs

Verdict: Mintakawa Large White Automatic Litter Box fits owners of small to medium cats who want health tracking and quiet operation. It is not suitable for larger breeds or those needing a ready-to-use box.

5Best wi-fi
CATLINK Open-X Large White

CATLINK Open-X Large White

Best for: multi-cat households needing health tracking

Design Type
Open-top
Connectivity
2.4GHz & 5GHz Wi-Fi
Safety Sensors
Weight sensors, infrared, anti-pinch
Health Tracking
AI waste analysis, health reports
Odor Control
Triple odor locking
Waste Drawer Capacity
12L, up to 15 days

The CATLINK Open-X is a large, open-top automatic litter box designed for multi-cat households. It features dual-band 2.4GHz and 5GHz Wi-Fi for stable app control. The 12L waste drawer holds up to 15 days of waste for one cat. AI health tracking distinguishes urine from feces to provide daily reports. Weighing 21.4 pounds, it includes weight, infrared, and anti-pinch sensors for safety.

Pros
  • Dual-band 2.4GHz and 5GHz Wi-Fi connectivity
  • 12L waste drawer holds up to 15 days of waste
  • AI health monitoring tracks urine and feces separately
  • Triple odor locking system keeps home fresh
  • Open design with 360-degree clear view for cats
Cons
  • Requires a weight difference of at least 0.9 lbs between cats for accurate recognition
  • Weighs 21.4 pounds, making it bulkier to move than lighter units
Good fit if
  • You need dual-band Wi-Fi for reliable app control
  • You want AI health reports to monitor urinary issues
  • You prefer an open-top design for timid or large cats
Skip if
  • You have multiple cats with similar weights under the 0.9 lbs difference
  • You require a closed-top design for maximum odor containment
  • You need a compact unit that weighs less than 20 pounds

Verdict: CATLINK Open-X Large Open-Top is ideal for owners who need reliable dual-band Wi-Fi and detailed health tracking for multi-cat homes. It suits those who prioritize an open entrance for cat comfort over a fully enclosed design.

6Best low-entry
Meowant 75L Open-Top Self-Cleaning Litter Box

Meowant 75L Open-Top Self-Cleaning Litter Box

Best for: smaller cats needing low-entry access

Interior Capacity
75L
Design Type
Open-top, low-entry
Connectivity
2.4GHz Wi-Fi
Cat Weight Range
3.3–22 lbs
Safety Sensors
Anti-pinch, 9 sensors
Health Tracking
Weight, activity

The Meowant 75L Open-Top Litter Box offers a spacious interior with a 6.8-inch low entrance. This design suits short-legged, overweight, and senior cats. It features 9 safety sensors and an anti-pinch structure. The unit connects via 2.4GHz Wi-Fi for app control. It includes odor-proof covers and a scented gel. The motor runs at 38dB. It tracks weight and activity for up to 6 cats.

Pros
  • 75L interior capacity provides ample space
  • 6.8-inch low-entry entrance aids mobility
  • 9 high-precision sensors ensure safety
  • Anti-pinch structure prevents entrapment
  • 38dB motor operates quietly
Cons
  • Maximum supported cat weight is 22 lbs
  • Interior capacity is 75L, smaller than some competitors
  • Only supports 2.4GHz Wi-Fi networks
Good fit if
  • You have senior or short-legged cats
  • You want open-top access for your pets
  • You need app-based health monitoring
Skip if
  • You have cats over 22 lbs
  • You require 5GHz Wi-Fi support
  • You need a fully enclosed design

Verdict: Meowant 75L Open-Top Litter Box fits owners of smaller or mobility-limited cats who prefer open access. It prioritizes easy entry and safety sensors over maximum weight capacity.

7Also great
ZHMZ G1 Large Self-Cleaning Litter Box

ZHMZ G1 Large Self-Cleaning Litter Box

Best for: smaller cats and odor-sensitive homes

Connectivity
2.4GHz Wi-Fi
Cat Weight Range
2.5–18 lbs
Safety Sensors
Dual sensors, 4 weight sensors
Health Tracking
Behavior and health
Odor Control
100% sealed waste drawer
Suitable For
Multiple Cats

The ZHMZ G1 is a large, white automatic litter box designed for multiple cats. It features a 12-inch opening and a 100% sealed waste drawer for odor control. The unit uses 2.4GHz Wi-Fi for app control and includes dual and weight sensors for safety. It supports behavior tracking and offers manual kitten mode. This model suits owners seeking a sealed waste system with smart monitoring capabilities.

Pros
  • 100% sealed waste drawer minimizes odors
  • Dual and 4 weight sensors for safety
  • 2.4GHz Wi-Fi app control
  • 12-inch opening for easy access
  • Behavior and health tracking via app
Cons
  • Maximum cat weight limit of 18 lbs is lower than competitors
  • Height limit of 15 inches restricts tall cats
  • Weighs 33 pounds, making it bulkier to move
Good fit if
  • You want a sealed waste drawer to reduce odors
  • You have cats weighing under 18 lbs
  • You prefer app-based health and behavior monitoring
Skip if
  • You have cats taller than 15 inches
  • You have cats heavier than 18 lbs
  • You need a unit compatible with 5GHz Wi-Fi

Verdict: The ZHMZ G1 Large Self-Cleaning Litter Box fits owners of smaller, indoor cats who prioritize odor containment and smart health tracking over accommodating larger breeds.

Specifications side by side

SpecPetSafe ScoopFree OpenSky LargeLohhuby Large Open-Top Automatic Litter BoxEllenpent Open-Top Large Litter BoxMintakawa Large App-Control Litter BoxCATLINK Open-X Large WhiteMeowant 75L Open-Top Self-Cleaning Litter BoxZHMZ G1 Large Self-Cleaning Litter Box
Interior Capacity–––––75L–
Design TypeOpen-topOpen-topopen-top–Open-topOpen-top, low-entry–
Connectivity2.4 GHz Wi-Fi2.4GHz Wi-Fi2.4GHz Wi-Fi2.4GHz Wi-Fi, Bluetooth2.4GHz & 5GHz Wi-Fi2.4GHz Wi-Fi2.4GHz Wi-Fi
Cat Weight Range–––3.5–15 lbs–3.3–22 lbs2.5–18 lbs
Safety Sensors–Anti-pinchinfrared, weight sensorsAnti-pinchWeight sensors, infrared, anti-pinchAnti-pinch, 9 sensorsDual sensors, 4 weight sensors
Health TrackingCat weight, litter box usage–usage, health patternsWeight, visit duration, frequencyAI waste analysis, health reportsWeight, activityBehavior and health
Odor ControlSealed waste drawer, deodorizer–sealed cover, deodorizer gel–Triple odor lockingOdor-proof cover, scented gel100% sealed waste drawer
Waste Drawer Capacity8.5L, up to 2 weeks–9L, up to 10 days–12L, up to 15 days––
Suitable For–Kittens–KittensMultiple CatsMultiple CatsMultiple Cats
Design–Open-TopOpen-Top–Open-TopOpen-Top, Low-Entry–
Safety Features–Anti-Pinch ProtectionSafety SensorsAnti-Pinch Protection–Safety SensorsAnti-Pinch Protection
Target Pet–Cats–CatsCatsCats, Multi-Cat HomesCats
ColorWhiteWhiteWhiteWhiteWhiteYellowWhite
SizeLargeLargeLargeLargeLarge, Multi-CatLargeLarge
Features––Waterproof––––
Smart Control––––WiFi––
Smart Features––––5G Wi-Fi––
Weather Protection––Weatherproof––––
Dimensions20.4 × 18.8 × 24.2 inches20.7 × 15 × 20.7 inches19.7 × 18.9 × 21.3 inches15.2 × 20.9 × 19.3 inches23 × 21 × 23 inches19 × 21 × 19 inches21 × 19 × 26 inches
Weight29.6 pounds18 pounds17.1 pounds21.4 pounds21.4 pounds16.5 pounds33 pounds
ModelZAL00-18120CAST-LB500BCH-ICB0201CL-CH-01MW-SC02G1

Frequently asked questions

Which open-top litter box is best for large cats?

The Ellenpent Large Open-Top Litter Box is ideal for large breeds. It features an open design and safety sensors to protect your pet. The unit measures 19.7 inches in length and 18.9 inches in width. It also includes health monitoring via an app. This model suits multi-cat homes where space and safety are priorities.

Is there a lightweight alternative to the PetSafe OpenSky?

Yes, the Lohhuby Large Open-Top Automatic Litter Box weighs only 18 pounds. This is significantly lighter than the PetSafe OpenSky Large, which weighs 29.6 pounds. The Lohhuby unit offers app control and anti-pinch protection. Its compact size makes it easier to move while still providing health tracking for your cat.

Which litter box supports 5GHz Wi-Fi?

The CATLINK Open-X Large White supports 5GHz Wi-Fi connectivity. This dual-band capability ensures a stable connection for health tracking in busy networks. It is designed for multi-cat households and features an open-top entrance. The unit measures 23 inches in length and width, providing ample space for your pets.

What is the best low-entry option for small cats?

The Meowant 75L Open-Top Self-Cleaning Litter Box is designed for low-entry access. It features safety sensors and app control for health monitoring. The unit is yellow and weighs 16.5 pounds. Its dimensions are 19 inches by 19 inches, making it suitable for smaller or mobility-limited cats who need easy entry.

Which model is best for odor containment?

The PetSafe ScoopFree OpenSky Large is noted for strong odor containment. It uses a sealed waste drawer to trap smells effectively. The unit also includes health monitoring via an app. It measures 20.4 inches in length and 18.8 inches in width. This model is ideal for owners who prioritize odor control in their home.

Are there options suitable for kittens?

The Lohhuby Large Open-Top and Mintakawa Large App-Control models are suitable for kittens. Both units feature open-top designs for easy access. The Lohhuby includes anti-pinch protection, while the Mintakawa offers quiet operation. These models provide health tracking and app control, making them safe and convenient for younger cats.

Which litter box is the heaviest?

The ZHMZ G1 Large Self-Cleaning Litter Box is the heaviest option at 33 pounds. It measures 21 inches in length and 26 inches in height. This model is best for smaller indoor cats and odor-sensitive homes. It includes app control and anti-pinch protection for safe, smart operation.