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By Jason Feng, Founder & Researcher. See how this review was researched.
Quick answer
PETKIT’s own manuals split the work into three speeds. Daily and weekly, you empty the waste bin, top up litter and wipe the sensor surfaces. Monthly, you brush out the cylinder and sifter and wash the litter pad. Every few months, you detach the drum entirely for a full wash.
The rule that matters most is stated in every PETKIT manual: the main unit is never rinsed or soaked. Cylinder, sifter and pad come off and can be washed. The base, the camera and the proximity sensor get wiped with a soft cloth and nothing wetter.
Table of contents
- What the manual actually says
- The three parts that come off
- Daily cleaning
- Monthly cleaning
- The deep clean
- What you must never soak
- Consumables and their replacement cycles
- Cleaning products to avoid
- Machine-specific notes
- Our verdict
- How we researched this
- Sources
What the manual actually says
PETKIT publishes user manuals as PDFs on its own site, and the cleaning chapter is the most useful eight pages in the document. The steps below follow the PETKIT Purobot Max Pro 2 manual, which PETKIT lists as model P9904, and the same structure appears across the Purobot and PuraMax lines.
The manual opens the cleaning chapter with a warning that sets the tone for everything after it: disconnect the power or turn off the device before you start. Every step that follows assumes the machine is unplugged.
It then gives a parts table rather than prose. Each component gets a clean method, a when-to-clean trigger and, for some parts, a when-to-replace line. That table is the backbone of this guide, so it is worth reproducing in full.
Table 1. The PETKIT parts table, from the Purobot Max Pro 2 manual.
| Part | When to clean | How to clean | When to replace |
|---|---|---|---|
| Cylinder | When the inner surface is dirty | Brush it | Not stated as a consumable |
| Litter sifter | As soon as a cat has loose stools | Brush it | When bent or broken |
| Litter pad | When dirty | Wipe with a soft cloth and water; do not scrub | When it sticks to litter severely or is broken |
| Base | After detaching the cylinder | Wipe with a wet tissue | Not applicable |
| Fisheye camera | When dusty or dirty | Wipe with a soft cloth | Not applicable |
| Proximity sensor | When dusty or dirty | Wipe with a soft cloth | Not applicable |
| N50 | On the stated cadence | Replace | On the stated cadence |
| N60 | On the stated cadence | Replace | On the stated cadence |
Two things stand out. The sifter trigger is not a calendar, it is an event, and the manual wants it cleaned immediately after a loose stool rather than at the weekend. And the litter pad carries an explicit do-not-scrub instruction, because scrubbing damages the surface coating that resists sticking.
The three parts that come off
Before any washing happens, three parts detach, and the manual gives the order.
First, remove the magnetic side cover. PETKIT notes this is also the part that triggers a "magnetic side cover not installed" prompt on the display if you forget to replace it.
Second, before disassembly, replace the waste bag. The manual is explicit about why: to avoid overflowing while you work. A full bin that you tilt during a clean is the most common way to make a simple job messy.
Third, unlock the buckle and lift the cylinder off the base. The cylinder, sifter and litter pad are the washable group. Everything else is wipe-only.
The reason for the split is straightforward once you look at the component list. The base holds the motor, the weight sensors and the control board. PETKIT lists the base material set as ABS, PP, TPE and silicone, and the machine weight at about 24.25 lbs, most of which is the base assembly. Water reaching the electronics is the failure mode the manual is steering you away from in every chapter.
Daily cleaning
Daily work on a PETKIT box takes a couple of minutes and does not require disassembly.
Empty the bin when prompted rather than when it is physically full. PETKIT rates the Max Pro 2’s 8 L bin at up to 17 days for a single cat, but that figure assumes one average cat in normal conditions. The company also recommends packing waste more frequently in hot and humid conditions, which is consistent with the odor chemistry covered in our odor control guide.
Check the litter level. PETKIT’s compatible-litter specification caps clumping clay, tofu and mixed litter at 12 mm in length and 3 mm in diameter, and the machine ships with two sifters: P99022 for larger particles like tofu and mixed litter, and P99023 for finer particles like bentonite and mineral clay. Using the wrong sifter produces the streaks and wasted cycles that owners read as a cleaning problem.
Wipe the high-touch exterior surfaces, and confirm the magnetic side cover is seated. If you see a "device failure" prompt with no obvious cause, the manual’s first checks are the side cover, the power state and whether the waste bin is full.
If a cat has a loose stool, go straight to the sifter. That is the manual’s own trigger, and it exists because soft waste smears the drum on the next cycle.
Scooping frequency for traditional boxes and the arithmetic behind it is covered in our litter box cleaning schedule, along with the intervals that scale by cat count.
Monthly cleaning
Monthly work is where the cylinder gets brushed out. PETKIT’s steps run in this order.
- Empty remaining litter. Align the magnetic litter remover with the sifter until it clicks, then use the app’s Empty function to cycle the drum and dump the litter. Remove the remover afterward.
- Remove the magnetic side cover, replace the waste bag, disconnect the power and unlock the buckle.
- Take the cylinder off the base. Grasp one side of the sifter and press until it bends away from the two buckles, marked A and B in the manual, then lift it out.
- Brush the cylinder, working the corners. Rinse it.
- Brush the sifter and rinse it.
- Wipe the litter pad with a wet towel. Do not scrub it.
- Wipe the base with a wet tissue. Do not rinse it.
- Wipe the fisheye camera, the smart odor eliminator and the proximity sensor with a soft cloth. The manual adds a separate instruction to wipe the odor eliminator’s air inlet regularly with a soft dry cloth so it stays unobstructed.
- Reassemble only when every part is completely dry. The manual repeats this twice, once in the cleaning chapter and once in the safety section.
Step 9 is the one people rush. A damp pad or a damp cylinder base introduces moisture into a machine whose sensors are calibrated by weight, and PETKIT’s own troubleshooting prompts include a "device failure" state that sends you to the app for detail.
The deep clean
The deep clean is the monthly routine done thoroughly, with the drum fully off the machine and the litter pad pulled out for a wash rather than a wipe.
The one extra step in the manual is removing the litter pad. Pinch the raised handle on the pad and pull it out. Clean it gently, and reinstall it by seating the top edge in its groove with the arrows aligned, then the bottom edge. PETKIT notes that a correctly seated pad shows a green edge that should not be visible once installed.
Reassembly order matters as much as the cleaning. Seat the sifter into point A until it bends, place the pad so both sides click into the groove, refit the cylinder and fasten the buckle, then replace the magnetic side cover. Run the machine and confirm the cycle completes without a stuck or error state before you refill litter.
How often a deep clean is due depends on the household, and PETKIT does not publish a fixed interval for it. [DATA NOT VERIFIED: PETKIT’s Purobot product pages, FAQ and user manuals do not state a deep-cleaning interval in days or months. The manual says clean when dirty and after loose stools, without a calendar figure.] Treat cat count and stool consistency as the schedule, and check the drum’s inner surface rather than the date.
What you must never soak
The do-not-soak list is short and it is the part of the manual most likely to be ignored.
The main unit. Every PETKIT manual carries the same line: the main unit must not be rinsed or soaked, and the device should not be used in a damp environment. Wipe it with a wet tissue or a damp cloth and stop there.
The electronic sensors. The fisheye camera, the proximity sensor and the smart odor eliminator take a soft cloth only. The Max Pro 2’s camera is rated IPX5, which covers water sprayed at it but not immersion, and PETKIT’s safety instructions still call for a soft dry cloth around the air inlet.
The battery and power path. Unplug before moving the device, and unplug before any cleaning step that involves detaching parts.
For contrast, the cylinder, the sifter and the litter pad are designed to be washed. The Max Pro 2’s drum is rated at 76 L, and its sifter and pad are removable parts with published replacement criteria. Washing those is expected maintenance, not a risk.
Consumables and their replacement cycles
Cleaning and consumable replacement are separate jobs on a PETKIT box, and the consumables are where most of the annual cost lives.
Table 2. PETKIT consumables with manufacturer-stated cycles and US list prices.
| Item | Manufacturer cadence | US list price | Where it sits |
|---|---|---|---|
| N50 2.0 odor eliminator | 30 days per piece | $19.99 for 3 | Waste bin lid |
| N60 odor eliminator | 45 to 60 days per piece | $19.99 for 3 | Cylinder air |
| Purifying liquid refill (Pura X / PuraMax) | 40 to 60 days per bottle | $19.99 for 4 | Machine-specific |
| Waste bags | Per bin change | Varies | Waste bin |
PETKIT states the N50 2.0 removes 98 percent or more of ammonia, a figure the company attributes to accredited third-party testing, and describes a fresh mint fragrance that lasts about a month. That is a manufacturer claim and it is presented here as one.
The full annual arithmetic, including how PETKIT’s cadences compare against Whisker’s and Petlibro’s, is collected in our comparison of automatic litter box consumable costs.
Cleaning products to avoid
PETKIT’s manual lists the cleaners by exclusion. Do not use alcohol, disinfectant, bleach or non-neutral detergent on the parts, and do not scrub the litter pad.
The reason is physical, not brand preference. The litter pad’s coating is what stops litter from sticking, and abrasion removes it. Bleach and strong disinfectants can also leave residue that reads as a scent marker to a cat, which is the same warning the ASPCA gives for litter boxes generally.
For the washable parts, the manual’s recommended approach is detergent and a thorough rinse. For the wipe-only parts, water and a soft cloth. Everything else on the shelf is optional and several of the popular options are on the do-not-use list.
Machine-specific notes
PETKIT’s cleaning steps are largely common across the Purobot and PuraMax families, but three machines differ in ways that change the routine.
The Purobot Ultra packs and heat-seals waste bags automatically and holds a 10 L bin rated at up to 20 days for one cat. Its packing sequence runs from an on-screen button and needs you standing there, and its refill rings are proprietary: PETKIT states that generic bags used with a refill ring can cause malfunctions. Cleaning is otherwise the same brush-and-wipe pattern.
The Purobot Max 3 carries a 7 L bin rated up to 15 days and a 70 L drum, the smallest of the recent line. It appears in the same manual set with the same washable group.
The Purobot Max Pro 2 is the reference machine here: 76 L drum, 8 L bin, up to 17 days, 12 safety sensors, and two interchangeable sifters.
If you are deciding between the two brands rather than cleaning one, the PETKIT vs Petlibro feeder comparison covers how the companies differ on the feeding side, and our guide to how often to clean a litter box sets these PETKIT intervals against the industry baseline.
Our verdict
Follow the manual’s three speeds: wipe daily, brush and wash monthly, and detach the drum for a full clean when the inner surface tells you it is due. Keep the base, the camera and the sensor on a soft cloth at all times, and never let water near the electronics.
Our pick for the parts that matter is to buy the two sifters instead of one. PETKIT ships the Max Pro 2 with sifters for both coarse and fine litter, and matching the sifter to your litter prevents more cleaning than any product will.
What we would not do is treat a deep clean as optional because the machine self-cleans. The drum holds what the sifter leaves behind, and the surface coating and the weight sensors are what degrade when residue accumulates. The manual’s do-not-soak rule protects the electronics; the do-clean-often rule protects everything else.
How we researched this
- Manufacturer manuals, read directly. The cleaning chapter, parts table, disassembly order, do-not-soak list and reassembly checks in this article come from PETKIT’s published user manual PDFs for the Purobot Max Pro 2, Purobot Ultra and YumShare lines, downloaded from PETKIT’s own instruction host.
- Product pages for specifications. Drum volumes, bin sizes, waste-duration ratings, sifter part numbers, litter size limits and camera ratings were read from PETKIT’s US product pages for the Purobot Max Pro 2, Purobot Ultra and Purobot Max 3.
- Consumable pages for cadence and price. The N50, N60 and purifying-refill cycles and prices come from PETKIT’s own product pages.
- Steps described, not performed. This is a documentation-based procedure. The steps follow PETKIT’s written and illustrated instructions, and the machine-specific notes are drawn from PETKIT’s specification tables.
- Gaps flagged. Where PETKIT publishes no deep-clean interval in days, the text says so rather than importing a number from another brand.
See our full methodology page for how we handle sourcing and affiliations.
Sources
- https://www.petkit.com/pages/manual-downloads
- https://instructions.petkit.com/App%20Manual/T5-2/20260202/T5-2_UserManual_EN_V1.1_20260202.pdf
- https://www.petkit.com/products/purobot-max-pro-2-automatic-cat-litter-box-with-ai-camera
- https://www.petkit.com/products/purobot-ultra
- https://www.petkit.com/collections/automatic-cat-litter-box
- https://www.petkit.com/products/odor-eliminator-n50
- https://www.petkit.com/products/pet-odor-eliminator-n60
- https://www.petkit.com/products/pura-x-pura-max-purifying-refill-4-bottles
- https://petlibro.com/pages/faq-product/luma-smart-litter-box
- https://www.litter-robot.com/support/article/litter-robot-4-deep-cleaning/