PetKit litter box filters and liners by part number

A solid odour-eliminator block (product model P9223) that clips onto the waste bin lid of the PuraMax, PuraMax 2, Purobot Max Pro, Max Pro 2 and Purobot Max 3. PETKIT says each piece lasts about 30 days, so a pack of three covers three months. On the original PuraMax the bin lid's silicone cover has to come off first.

Change it every month; 4 steps, no tools.

After the change: The PETKIT app's device page shows how much life the odour eliminator has left; there is no separate reset for the N50.

Fits 5 PetKit models: Pura Max, Pura Max 2, Purobot Max 3, Purobot Max Pro, Purobot Max Pro 2.

PETKIT's N60 odour block (product model P9224) for the Purobot Ultra, Purobot Crystal Duo, Purobot Max 3 (in the Smart Odor Eliminator, not in the Basic version) and the Purobot Max Pro and Max Pro 2. PETKIT says one piece lasts 45 to 60 days. The app tracks it and shows 'Expired' when it's due.

Change it every 2 months; 4 steps, no tools.

After the change: When the N60 label in the PETKIT app turns red and says Expired, fit a new N60 and tap Reset; it should then show Normal.

Fits 5 PetKit models: Purobot Crystal Duo, Purobot Max 3, Purobot Max Pro, Purobot Max Pro 2, Purobot Ultra.

PETKIT's larger drawstring trash bags (product model P99042), separated so there's no tearing along a perforation. PETKIT lists them for the Purobot Max Pro and Max Pro 2, the Purobot Max 3 and the PuraMax and PuraMax 2. Twenty bags per roll; change one when the app says the bin is full.

After the change: No reset. The app's waste bin status clears once the bin is emptied and refitted.

Fits 5 PetKit models: Pura Max, Pura Max 2, Purobot Max 3, Purobot Max Pro, Purobot Max Pro 2.

PETKIT's drawstring trash bags for the waste bin of the Pura X, PuraMax, PuraMax 2 and Purobot Max 3 (product model P9901C). Each roll holds 20 bags of 55 x 30 cm. Change the bag when the app shows the bin is full. PETKIT Australia sells single rolls and four-roll packs.

After the change: No reset. The app's waste bin status clears once the bin is emptied and refitted.

Fits 4 PetKit models: Pura Max, Pura Max 2, Pura X, Purobot Max 3.

The concentrated purifying liquid for the Pura X's built-in deodorising module (product model P9214). PETKIT also lists it for the PuraMax and PuraMax 2 fitted with its optional air purifier smart spray. When the app says the liquid is low, pour in one whole 50 ml bottle. PETKIT says to use only its own liquid in the module.

After the change: The PETKIT app tells you when the liquid is low; there is no reset step.

Fits 3 PetKit models: Pura Max, Pura Max 2, Pura X.

The disposable crystal litter tray set for the Purobot Crystal Duo: a leak-proof tray plus a bag of silica crystals. PETKIT Australia says a set lasts up to 30 days with one cat. The Crystal Duo only works with PETKIT's own trays and litter, and its tray light turns solid red when it's time for a new one.

After the change: No reset: the tray light shows solid green once a new tray is fitted correctly.

Fits the Purobot Crystal Duo.

The auto-packing bag cartridge for the Purobot Ultra only (product model P99034). Each ring seals about ten bags of waste; when a warning mark appears on the bag or the app says it's out, fit a new ring. Rings carry an NFC chip. PETKIT Australia says its rings are coded for Australian units and others may not be recognised.

After the change: No reset: the Ultra reads the new ring's chip, and the app's Refill Ring status updates once it is fitted.

Fits the Purobot Ultra.

The scented version of the Purobot Crystal Duo tray set: the same disposable leak-proof tray and silica crystals with a light Fresh Green fragrance. PETKIT Australia lists it for the Crystal Duo only and says a set lasts up to 30 days with one cat.

After the change: No reset: the tray light shows solid green once a new tray is fitted correctly.

Fits the Purobot Crystal Duo.

A Purobot Crystal Duo tray set whose crystals change colour with urine pH, so you can spot changes worth raising with your vet. Otherwise it is the same disposable tray and crystals, for the Crystal Duo only, lasting up to 30 days with one cat, PETKIT Australia says.

After the change: No reset: the tray light shows solid green once a new tray is fitted correctly.

Fits the Purobot Crystal Duo.