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PETKIT MAX2: seam-tape modification notes for PuraMax 2 buyers

I bought a PETKIT MAX2 after moving and spent hours taping its seams to keep litter out. I like its enclosed waste bin, but hope the next version improves.

A white PETKIT automatic cat litter box on a tiled floor with a front opening into the drum, control panel on the right, and overlaid Chinese text across the upper front.
An overhead view inside a cardboard shipping box containing a new white rounded pet appliance packed tightly with white molded foam inserts.
Interior view of a white hooded cat litter box showing a green sifting mesh at the top and two strips of yellow tape stuck over slots at the bottom, with Chinese text overlay describing a solution for urine leaking.
Close-up of a small support roller in the white litter-box base, with light tape around the roller opening and a Chinese text overlay.
Top-down view of the interior base of a white plastic machine, likely a smart pet litter box or rotating drum device, with four embedded small rollers each taped down along their edges with strips of white tape. Across the center is Chinese text with a yellow highlight.
Close-up view of an opened white smart pet appliance, where a white cover with two QR codes and a purple dot is taped securely along all edges with light masking tape to seal the compartment. Overlaid text in bold with a yellow highlight is shown at the bottom.
Interior view of a white plastic automatic cat litter box chassis where seams and gaps have been sealed with white tape, overlaid with bold Chinese text.
A grey and white tabby cat crouching inside an enclosed white cat litter box on grey cat litter granules, with overlaid Chinese caption text in the lower left.

The screen on the first-generation model I bought broke after about a year. Fortunately, the other functions were unaffected, so I made do with it for three or four years. When I moved house last month, I did not want to carry it with me, so I threw it away.

After settling into the new home, my several cats could use the litter box many times a day, so I quickly arranged an automatic litter box. After watching the options for a long time, I still chose the MAX. Although the design has been updated in many ways over the years, this structure seems safest because it will not trap a cat. The waste bin also has a lid, which is very convenient for renters. However, the machine still has many design problems. Once it arrives, I recommend using tape to seal every gap inside the waste bin, to stop litter from falling in and to prevent ammonia released by cat feces from corroding the motherboard and screen.

I worked on it for half a day and really strained my back. I hope the manufacturer continues improving the next generation.

Source: 枫不舞 · Xiaohongshu · 2025-08-18 · 小佩max2自动猫砂盆 改造. Search this Chinese title in Xiaohongshu to find the original post.

Before You Buy

Models in your region

The owner describes a China-market PETKIT MAX2 automatic litter box and does not provide a full model number. The current UK PURA MAX 2 P9902 is a newer same-brand regional counterpart, but matching accessories, app-region settings and support terms remain unconfirmed. The owner’s tape modification is an individual workaround, not a verified repair.

Model in this review Related regional model What to know
PETKIT MAX2 automatic cat litter box PETKIT PuraMax 2 with PURA Air P9902 (UK) The owner identifies the Chinese unit as MAX2 without a full model number. The UK PETKIT PuraMax 2 with PURA Air P9902 is the supplied regional counterpart for comparison, not a confirmed identical China-market configuration.
PETKIT MAX2 (source unit) PETKIT PURA MAX 2 P9902 (International English manual) The international English manual identifies model P9902 and lists dimensions of 620 × 538 × 552 mm with a 12V, 2A power requirement. These official details describe the regional/manual product and should not be assumed to confirm every detail of the owner’s unit.
Model in this review
PETKIT MAX2 automatic cat litter box
Related regional model
PETKIT PuraMax 2 with PURA Air P9902 (UK)
What to know
The owner identifies the Chinese unit as MAX2 without a full model number. The UK PETKIT PuraMax 2 with PURA Air P9902 is the supplied regional counterpart for comparison, not a confirmed identical China-market configuration.
Model in this review
PETKIT MAX2 (source unit)
Related regional model
PETKIT PURA MAX 2 P9902 (International English manual)
What to know
The international English manual identifies model P9902 and lists dimensions of 620 × 538 × 552 mm with a 12V, 2A power requirement. These official details describe the regional/manual product and should not be assumed to confirm every detail of the owner’s unit.

What the owner modified

The owner describes sealing the waste area, while the photographs show tape on inner cylinder seams and around a covered electronics area. These locations should not be treated as interchangeable. The owner believes this can keep litter out and protect the motherboard and screen from ammonia, but the proposed mechanism and any extension of machine life remain unconfirmed.

This report documents an owner modification, with no measured durability result. It does not recommend taping electronics, sensors or moving parts. For leaks or suspected electronics damage, use the manufacturer’s maintenance instructions and support rather than altering those areas. The manual says to power off before maintenance, prohibits rinsing or soaking the main unit, and advises wiping the pad with water while avoiding alcohol, disinfectants, bleach and non-neutral detergents.

Buying and setup checks for regional versions

The UK PuraMax 2 P9902 is specified for cats weighing 1.5–10 kg, a hard level surface at least 5 cm from walls, and litter no longer than 12 mm. Check those conditions against your space, cat and litter before buying; they are official UK requirements, not measurements confirmed for the owner’s China-market unit.

The international manual lists the P9902 at 620 × 538 × 552 mm and requires 12V, 2A power. Confirm the regional plug, power supply and available floor space for the model sold in your market rather than transferring the owner’s configuration across regions.

Waste storage and app limits

The UK product page lists a 7 L waste bin and up to 15 days of waste storage, but the 15-day figure comes from single-cat laboratory conditions and can vary with heat and humidity. A household with several cats, like the owner’s, should expect a different emptying schedule.

The UK counterpart uses a 2.4 GHz app connection and can run preset settings without internet, although app data will not update offline. Matching app-region support and accessories for the owner’s China-market MAX2 remain unconfirmed, so verify those details locally.

How to interpret the earlier screen failure

The owner reports that a first-generation unit’s screen failed after about a year, while its other functions continued for three or four years. This is useful ownership history, but it does not establish the reliability of the newer MAX2 or prove that ammonia caused the earlier failure.

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