猫用トイレアクセサリー解説：パッド、カーテン、フィルター

Quick answer

Buy accessories in this order: a pad that fits your box's base, then an odor filter if smell escapes the waste bin, then a hood or curtain if tracking or privacy is the problem. Skip anything that doesn't list your exact model. For PETKIT owners, the High Performance Cat Litter Pad Max 3.0 and Pet Odor Eliminator N50 2.0 cover the two most common complaints — leakage and odor — without changing how the box works.

Automatic litter box accessories are sold as upgrades, but most of them solve one specific problem: mess outside the box, smell inside the room, or a cat who wants more privacy. If you buy without naming the problem first, you end up with pads that don't fit, curtains that block the sensors, and filters for a bin you don't have.

This guide walks through the three accessory groups that matter most — pads, curtains and hoods, and odor filters — with concrete fit checks and trade-offs. It focuses on PETKIT's automatic boxes and the accessories that are actually compatible with them, so you can decide what to add now and what to leave on the shelf.

Start with the problem, not the accessory

Before adding anything, spend a week noticing where the failure happens. Is urine pooling under the base? That's a pad problem. Is litter scattered three feet from the entry? That's a hood or curtain problem. Does the room smell even after the box cycles? That's a filter or waste-bin problem. Each fix is cheap on its own, but buying all three at once usually means one of them sits unused.

Write down your box model before you shop. Accessory fit is model-specific, and a pad or hood designed for one base shape will not seal on another. If a product page doesn't name your model, treat that as a missing specification rather than a maybe — contact support or skip it.

• Name the problem in one sentence before you buy anything.
• Note your exact box model and base dimensions.
• If compatibility isn't stated, assume it isn't confirmed.

Cat litter pads: what actually matters

A pad's job is to stop liquid from reaching the bottom of the box and to release waste instead of holding it. The two features worth paying for are a waterproof backing and an anti-stick surface. A waterproof layer keeps urine from seeping through to the base, and anti-stick means waste lifts away instead of smearing during cleanup. Scratch resistance matters in multi-cat homes where claws drag across the surface.

Fit is the deciding factor. A pad that's too small leaves exposed seams where liquid collects; one that's too large bunches up and can interfere with the cylinder or rake. Measure the base, not the outer shell, and check whether the pad is designed for your box's cleaning mechanism. Pads are consumables, so factor replacement frequency into the cost rather than judging the sticker price alone.

• Prioritize waterproof backing and anti-stick surface over thickness.
• Measure the base, not the outer shell, before ordering.
• In multi-cat homes, check scratch resistance before buying in bulk.

Hoods and dust curtains: tracking and privacy

A hood or curtain does two jobs: it reduces litter tracking by giving granules a surface to fall back from, and it gives shy cats a darker, more enclosed entry. The trade-off is airflow. Enclosing a box traps odor unless you also handle the waste bin, and some cats refuse an enclosed entry after using an open one for years.

Compatibility is stricter here than with pads. A front-entry hood has to line up with the entry opening and not block the sensors or the rotating drum. Materials matter too: durable, non-toxic PP is easy to wipe down and holds up to daily use, while soft curtains are lighter but collect dust. If your cat is skittish, introduce the hood over a week rather than installing it and walking away.

• Add a hood for tracking or privacy, not for odor alone.
• Confirm the hood clears the entry, sensors, and drum.
• Give shy cats a gradual introduction instead of a sudden change.

Filters and odor eliminators: the 30-day rule

Odor control accessories are the easiest to overbuy because they're cheap and easy to forget. The useful question is lifespan: how long does one unit actually last, and how many come in the pack? A piece rated for 30 days with three pieces in the box gives you roughly a quarter of coverage per purchase, which makes the real cost predictable.

Placement matters as much as the product. Odor eliminators designed for the waste bin work on the air leaving the bin, not on the litter itself, so they won't fix a box that isn't cycling properly. Replace on schedule rather than waiting for smell — by the time you notice it, the unit is already past its useful window.

• Check pieces per pack and rated lifespan before comparing prices.
• Treat bin odor and litter odor as separate problems.
• Replace on a calendar, not on smell.

How to sequence your purchases

If you're starting from zero, buy in this order: pad first, then odor eliminator, then hood or curtain. The pad addresses the mess that requires the most cleanup, the eliminator addresses the complaint guests notice first, and the hood is the most cat-dependent upgrade. Spacing purchases also lets you see whether each one actually changed anything.

If you already own a PETKIT automatic box and one problem dominates, buy only the accessory aimed at that problem. Adding a hood to a box with a leaking base won't help, and adding a pad to a box with bin odor won't either. One change at a time keeps cause and effect clear.

• Pad, then odor eliminator, then hood or curtain.
• Change one thing at a time so you can judge the result.
• Reassess after two weeks before adding the next accessory.

Decision rules for buying litter box accessories

• If liquid reaches the base, buy a pad: Choose a pad with a waterproof backing and anti-stick surface sized to your box's base, not its outer shell. Skip hoods and filters until leakage is solved.
• If the room smells after cycling, buy a bin odor eliminator: Check pieces per pack and rated lifespan so you know your real cost per month before comparing prices. Replace on schedule; don't wait for odor to return.
• If litter scatters or your cat hesitates, consider a hood: Confirm it's compatible with your exact model and that it clears the entry, sensors, and drum. Introduce it gradually and remove it if your cat avoids the box.
• If compatibility isn't listed, treat it as unconfirmed: A missing model name is a missing specification, not a safe assumption. Ask support or choose a different accessory.

PETKIT accessories worth matching to your box

• High Performance Cat Litter Pad Max 3.0: Designed with an upgraded cylinder to prevent urine leakage inside the automatic litter box, with a waterproof surface and an anti-stick feature so waste doesn't adhere. If leakage under the base is your main complaint, this is the accessory that targets it directly rather than a general-purpose pad.
• Pet Odor Eliminator N50 2.0: Controls odor in the waste bin, with one piece lasting 30 days and three pieces per pack. Three pieces give roughly a quarter of coverage, so you can budget replacements instead of buying reactively when smell appears.
• Front-entry Hood: Compatible with the Purobot Crystal Duo, made from durable, non-toxic PP, and designed to reduce litter tracking, enhance odor control, and give shy cats added privacy. It's a model-specific upgrade, so it only makes sense if you own the Purobot Crystal Duo — not as a universal add-on.
• Purobot Ultra Automatic Litter Box: Monitors urinary health with AI, tracks litter-box behavior, recognizes each pet, auto-cleans, auto-seals every trash bag, and refills a new one. Because the box already handles cleaning and bag sealing, your accessory budget is better spent on pads and bin odor control than on manual cleanup tools.

Who should buy these accessories

Best for

• Owners of PETKIT automatic boxes who have one clear problem: leakage, bin odor, or tracking
• Multi-cat homes where pads wear faster and bin odor builds quickly
• Homes with a shy cat that wants a more enclosed entry

Not for

• Owners who haven't confirmed their box model and base dimensions
• Cats that have refused an enclosed box before — a hood won't change that
• Anyone hoping accessories will fix a box that isn't cycling correctly

Buy the accessory that matches the problem you actually have, confirm it fits your exact model, and give each change two weeks before adding the next. Pads, bin odor eliminators, and hoods each solve a different issue — treating them as a bundle is how unused accessories pile up.