Self-cleaning litter box litter & supplies
Compatible litter, crystal trays, liners, odor filters and mats for the boxes we review, all sold on Amazon. Pick your box brand to filter.
Litter and crystal trays
Guide →The repeat purchase. Globe and drum boxes are tuned for clumping litter; PetSafe's ScoopFree Crystal boxes only work with their own disposable trays.
- LitterNeakasa mineral cat litter, 17.6 lb, for the M1Official Neakasa
Neakasa's own clumping mineral litter, sized for the M1's sifting grate. Fits: Neakasa M1.
- Crystal traysPetSafe ScoopFree crystal tray refills, premium blue, 3-packOfficial PetSafe
The ScoopFree Crystal boxes only work with these disposable trays; each lasts about a month for one cat (PetSafe). Fits: ScoopFree Crystal Smart, ScoopFree Classic. Not for the SmartSpin, which takes ordinary clumping litter. About $73.49 (PetSafe 3-pack price, Nov 12, 2026).
- Crystal traysPetSafe ScoopFree crystal tray refills, lavender, 3-packOfficial PetSafe
Same leak-protected tray with a lavender-scented crystal; PetSafe says up to 30 days for one cat. Fits: ScoopFree Crystal Smart, ScoopFree Classic. Scented litter puts some cats off; most cats prefer unscented (AAFP).
- LitterDr. Elsey's Ultra unscented clumping clay cat litter, 40 lbCompatible, third-party
Unscented, hard-clumping, standard-weight clay: the type Whisker recommends and most globe and drum boxes are tuned for. Fits: Litter-Robot 4, Litter-Robot 5, Litter-Robot EVO, PuraMax 2, Purobot Max Pro 2, Purobot Ultra, Neakasa M1, ScoopFree SmartSpin, Leo's Loo Too, ELS PET Orbitie, Lesure Open-Top, Furbulous Self-Packing. Not for ScoopFree crystal trays. Check your box's sifter: PETKIT asks for granules under 0.5 in. About $22.99 (Chewy price, Nov 2026).
Liners and waste bags
Guide →Every drawer needs a liner. Branded liners fit best and help drawer-level sensors read correctly; third-party bulk rolls cost less per bag.
- Liners & bagsLesure LitterFree L1 waste bags, 1 rollOfficial Lesure
Lesure's own bags for the open-top box's sealed bin. Fits: Lesure Open-Top.
- Liners & bagsPETKIT replacement waste bags for PuraMax 2 / Purobot Max Pro, 1 roll (18)Official PETKIT
PETKIT's own HDPE bags; the listing suggests about two changes a week for two average cats. Fits: PuraMax 2, Purobot Max Pro 2. Not for the Purobot Ultra, which uses bag rings for its auto-bagger.
- Liners & bagsPetSafe ScoopFree SmartSpin waste bin liners, 25 countOfficial PetSafe
Unscented liners sized for the SmartSpin drawer (also fit the ScoopFree Clumping box). Fits: ScoopFree SmartSpin. About $17.99 (Amazon list price in a listing snapshot).
- Liners & bagsLitter-Robot waste drawer liners by Whisker, 25-packOfficial Whisker
Custom-fit 9–11 gallon liners; Whisker's white redesign gives more accurate drawer-level readings. Fits: Litter-Robot 4, Litter-Robot 5, Litter-Robot EVO. The Amazon listing showed as unavailable in one snapshot; Whisker's cleaning supply kit also includes 25 liners. About $25 (Whisker store price for 25).
- Liners & bagsCat litter box bags for Neakasa M1 and PetPivot AutoScooper, 27 × 13 in, 120 countCompatible, third-party
A 120-count roll costs less per bag than branded refills for the M1's large bin. Fits: Neakasa M1. Third-party fit claim; measure your bin before buying.
Odor control
Guide →Carbon filters, odor packs and deodorizers are the consumables that keep a sealed drawer from smelling between emptyings.
- Odor controlLesure LitterFree L1 aroma diffuser boxOfficial Lesure
Replacement deodorizing box for the Lesure's waste bin. Fits: Lesure Open-Top. Scented products can put cats off; try it unscented first if your cat hesitates.
- Odor controlPETKIT N50 Odor Eliminator 2.0, 3-packOfficial PETKIT
Clips into the PuraMax 2 bin; one lasts about a month (listing). Fits: PuraMax 2. PETKIT says it doesn't fit the Purobot Ultra. Remove the bin lid's silicone cover to install.
- Odor controlPetSafe ScoopFree SmartSpin and OpenSky deodorizers, 2-packOfficial PetSafe
Each deodorizer slots into the drawer and lasts about 15 days (listing). Fits: ScoopFree SmartSpin.
- Odor controlLitter-Robot 4 carbon filters by Whisker, 6-packOfficial Whisker
Absorbs odor from the waste drawer; Whisker suggests a new filter every 2–4 weeks. Fits: Litter-Robot 4. About $30 (Whisker store and Amazon listing snapshot).
- Odor controlLitter-Robot odor-reducing bundle: 6 carbon filters + 6 OdorTrap packsOfficial Whisker
Both odor consumables in one order for the LR4. Fits: Litter-Robot 4. Listed for the Litter-Robot 4; check carbon filter fit for the EVO and LR5 on Whisker's site.
- Supply kitWhisker Litter-Robot cleaning supply kit: 30 wipes, 25 liners, spray, 6 OdorTrap refillsOfficial Whisker
A few months of liners and odor packs plus the cleaner Whisker recommends for the globe. Fits: Litter-Robot 4, Litter-Robot 5, Litter-Robot EVO. About $85 (Amazon listing snapshot).
Litter mats
Guide →Open-top boxes in particular throw litter; a large mat catches it before it travels.
- Litter matGorilla Grip cat litter mat, 35 × 23 inUniversal fit
Big enough to catch scatter from most globe boxes; textured backing stays put.
- Litter matGorilla Grip cat litter mat, extra large, 40 × 28 inUniversal fit
The size we'd put under open-top boxes, which both WIRED and Tom's Guide found fling more litter.
- Litter matiPrimio jumbo cat litter trapper mat, 32 × 30 inUniversal fit
Honeycomb two-layer mat with a waterproof layer, for cats that kick litter far.
Compatibility checked November 2026. Confirm your exact model on the listing before buying.
What to buy first
Two things before the box arrives: the right litter and a supply of liners. Most globe and drum boxes want a standard-weight clumping clay; Whisker recommends one, and PETKIT asks for granules under 0.5 in. If you're buying a ScoopFree Crystal box, the trays are the litter, so order a multi-pack. A large mat is the third thing: open-top boxes in particular throw litter, and both WIRED and Tom's Guide reported more scatter from them.
Litter: keep it simple and unscented
The AAFP's owner guide says most cats prefer soft, unscented clumping litter, and that many dislike aromatic or dusty litters and deodorizers. That matters more with an automatic box, because you want your cat to like it from day one. Avoid translucent or white litter in a Litter-Robot: Whisker says it can confuse the level sensor. Our litter guide goes box by box.
Liners, filters and odor refills
Whisker suggests a new carbon filter and OdorTrap packs every 2–4 weeks, and sells liners at $25 for 25. PETKIT's N50 odor eliminator lasts about a month per refill, and PetSafe's SmartSpin deodorizers about 15 days each. Third-party bulk liners are cheaper per bag, but check the size: a bag that bunches can block a drawer sensor. See the real numbers for your household in the cost calculator.
Crystal trays cost the most to run
PetSafe sells three disposable trays for $73.49, about $24.50 each, and says one lasts about a month for one cat. With two cats a Chewy answer puts it at 10–15 days. Over a year that can cost more than the box. If that's a dealbreaker, compare the ScoopFree boxes with clumping-litter models in ScoopFree vs Litter-Robot. Still choosing the box itself? Start with the comparison chart.