An automatic litter box can reduce daily scooping, improve odour control and make it easier to monitor your cat’s toilet habits. However, the best model for your household depends on more than cleaning performance alone.
Your cat’s size, mobility, litter preference and comfort with enclosed spaces should all be considered. You should also think about how much manual waste handling you want, whether you need camera monitoring and how much space is available in your home.
PETKIT Australia offers several automatic litter boxes designed for different cats and lifestyles. This guide compares four popular models:
- PETKIT PURA MAX 2 Self-Cleaning Cat Litter Box
- PETKIT PUROBOT MAX PRO AI-Powered Cat Litter Box
- PETKIT PUROBOT Ultra AI-Powered Cat Litter Box
- PETKIT PUROBOT Crystal Duo Automatic Cat Litter Box
Each model provides automatic waste collection, but they differ in camera coverage, waste bag management, litter compatibility, entrance height and overall maintenance.
PETKIT PURA MAX 2: Best for Everyday Convenience
The PETKIT PURA MAX 2 is suited to cat owners who want to reduce daily scooping without paying for advanced camera features.

It offers a familiar automatic litter box experience and is a sensible starting point for households upgrading from a traditional tray. It may also suit owners who prefer a simpler setup with fewer smart features to manage.
PETKIT PUROBOT MAX PRO: Best for Closer Health Monitoring
The PETKIT PUROBOT MAX PRO is designed for owners who want more insight into their cat’s toilet habits.

It can be particularly useful in multi-cat households, where identifying changes in one cat’s routine may otherwise be difficult. The added monitoring also provides greater reassurance for owners who spend long periods away from home.
PETKIT PUROBOT Ultra: Best for Maximum Automation
The PETKIT PUROBOT Ultra is the premium choice for owners who want to minimise regular litter box maintenance.

Its advanced automation makes it well-suited to busy households, frequent travellers and anyone who wants fewer manual steps between cleaning cycles. It also provides the most complete remote experience among the four models.
PETKIT PUROBOT Crystal Duo: Best for Cats That Prefer Open Trays
The PETKIT PUROBOT Crystal Duo is a strong alternative for cats that are hesitant to enter enclosed automatic litter boxes.

Its open layout feels closer to a traditional litter tray, which may make the transition easier for cautious cats. It may also appeal to owners who prefer replacing a complete litter tray rather than cleaning an enclosed rotating chamber.
Compare PETKIT Automatic Cat Litter Boxes
Choosing the right PETKIT automatic litter box depends on your cat’s habits and the level of maintenance you want to reduce. Some owners need a simple and cost-effective self-cleaning option, while others prefer camera monitoring, automatic waste bag replacement or an open-top design.
The comparison below highlights the key differences between the PETKIT PURA MAX 2, PUROBOT MAX PRO, PUROBOT Ultra and PUROBOT Crystal Duo. Consider your cat’s litter preference, mobility and comfort with enclosed spaces before selecting a model.
PETKIT Automatic Litter Box Comparison
| Feature | PETKIT PURA MAX 2 | PETKIT PUROBOT MAX PRO | PETKIT PUROBOT Ultra | PETKIT PUROBOT Crystal Duo |
| Key feature | Upgraded MAX model and cost-effective choice | 210° fisheye camera for precise litter box monitoring | Rotatable ultra-wide-angle camera with automatic waste collection and bag replacement | Open-top crystal litter system with AI camera health monitoring |
| Camera coverage | No built-in camera | Inside the chamber | Inside and outside the chamber | Top-view litter area monitoring |
| Remote functionality | Remote control | Remote control and live streaming | Remote control, live streaming and two-way voice interaction | Remote control, live streaming and one-way audio |
| Waste bag management | Pull-out waste collection bin with manual bagging | Drawstring bag with one-pull closure | Automatic bagging and self-replacing waste bags | Automatic waste collection into dual-side traps |
| Waste bin capacity | 7L | 8L | 10L | Dual waste trap system |
| Cylinder capacity | 76L | 76L | 70L | Open-top design |
| Mobility | Disassembly recommended before moving | Lift handle and wheels | Lift handle and wheels | Lightweight open-top design |
| Deodorisation coverage | Waste collection bin with upgraded N50 Gen 2. Optional inner chamber deodorisation with a smart odour purifier | Inner chamber with N60 and waste collection bin with upgraded N50 Gen 2 | Inner chamber and waste collection bin | Double odour control with crystal litter absorption |
| Litter disposal method | Magnetic filtering litter mesh and one-button litter dumping with the magnetic litter-dumping plate installed | One-button litter dumping with the magnetic litter dumping plate installed | One-button litter dumping | Disposable crystal litter tray replacement |
| Compatible litter types | Tofu litter, bentonite clay litter and mixed litter | Tofu litter, bentonite clay litter and mixed litter | Tofu litter, bentonite clay litter and mixed litter | PETKIT Crystal Cat Litter |
| Entrance height from the ground | Approximately 200mm | Approximately 300mm | Approximately 265mm | Approximately 180mm |
| Inner chamber dimensions | 480 × 520 × 520mm | 480 × 520 × 520mm | 467 × 501 × 501mm | Open-top design |
| Main unit dimensions | 620 × 538 × 552mm | 657 × 538 × 603mm | 532 × 818 × 612mm | 818 × 507 × 334mm |
How to Choose the Right Automatic Litter Box
Choose a litter box that suits your cat’s size, habits and comfort level. Focus on accessibility and ease of use rather than selecting a model based only on smart features.
- Check the entrance height
Make sure your cat can enter and exit comfortably. - Consider the design
Some cats prefer open trays, while others are comfortable with enclosed boxes. - Match the litter type
Choose a box that works with the litter your cat already prefers. - Review the maintenance
Compare waste handling, cleaning requirements and replacement supplies. - Measure your space
Confirm there is enough room for the unit and easy access around it. - Introduce it gradually
Keep the old tray nearby until your cat consistently uses the new one.
Scoop Less, Enjoy More
The right automatic litter box can make daily pet care cleaner, easier and less time-consuming. By considering your cat’s comfort, preferred litter and your ideal level of maintenance, you can choose a model that works well for everyone at home.
Ready to leave daily scooping behind? Shop PETKIT Automatic Cat Litter Boxes and find the right solution for your cat.
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