ROJECO Smart Cat Odour Purifier (Litter Box Deodoriser)

The ROJECO Smart Cat Odour Purifier is a small, fragrance-free litter box deodoriser that works with oxygen and negative ion technology instead of perfume. A motion sensor pauses it when your cat comes to the litter box, a rechargeable battery runs for up to 7 days, and the fan is quiet enough not to bother a nervous cat. The manufacturer rates the deodorisation rate at 99% or more.

Key features

• Fragrance-free deodorising: uses oxygen and negative ions to break down odour molecules rather than covering them with scent. The manufacturer rates the deodorisation rate at 99% or more.
• Smart motion sensor: switches off when your cat approaches the litter box and resumes after they leave, so it never runs while your cat is in the box.
• Up to 7 days per charge: a built-in 4000mAh battery, recharged by USB (cable included).
• Very quiet: under 20dB.
• No consumables: no filters, cartridges or refills to buy.
• Dust reduction: the manufacturer rates dust reduction at 99.9% or more, which helps with litter dust in the air.
• Three operating gears: chosen with the slide switch on the back.
• Compact: 94 × 94 × 33mm and 197g, fixed with a snap cap and double-sided tape.

Six features at a glance

The manufacturer's feature chart shows six icons, covering a deodorisation rate of 99% or more, long battery life, dust absorption and three operation modes.

Fragrance-free odour removal

Instead of masking smells with perfume, the unit uses oxygen and negative-ion purification. The manufacturer states that this double purification breaks down more than 99% of the odour in cat litter, and the result is pure and fragrance-free.

Smart motion sensor

A biosensor watches for your cat. In the manufacturer's picture, the unit stays quiet while a cat stays in the litter box and starts purifying once the cat leaves, so it works without disturbing your pet.

Up to 7 days on one charge

The battery is rated at 4000mAh and the manufacturer says it lasts up to 7 days on a full charge. The picture shows two 2000mAh cells inside the casing. Recharge it by USB when you clean the litter box each week.

Three operating gears

A slide switch on the back selects off, or one of three gears. The manufacturer's table gives the working pattern for each gear:

Ultra quiet, under 20dB

The manufacturer lists the noise at below 20dB. Its chart marks 20dB as inaudible sound and 50dB as noisy, so the unit will not disturb your cat in a bedroom or living room.

Dust

The negative ions also attract airborne dust, which helps cut down the litter dust that floats around the box. The manufacturer rates dust reduction at 99.9% or more.

Where it works

Mount it on a clean surface 8 to 16 inches (about 20 to 40cm) from the litter box. The compact body suits different types of litter trays, and the pictures show it working with semi-closed and fully enclosed litter boxes. It also works in other small spaces such as shoe cabinets, wardrobes, bathrooms and pet crates.

Scratch-resistant snap-cap mounting

A rotary clasp uses a heavy-duty cap and double-sided tape. Stick the cap to a clean surface, then turn the purifier onto it. The manufacturer states the rotating buckle design is meant to stop a cat scratching it off.

No consumables

There are no filter cartridges or other consumables to buy, which keeps running costs low and cuts down on waste.

Small details

Soft light indicators show the status without lighting up the room, and a sensitive biosensor lens detects your cat. On the back you will find the slide switch and USB charging port, and three air vents on the underside let the purified air out.

How to set it up

1. Clean the surface where you will mount it.
2. Peel the film from the tape on the snap cap and press firmly for 10 seconds.
3. Align the purifier with the cap and turn it clockwise until it is secure.
4. Switch it on at the back and pick a gear. A blue light shows that smart monitoring is active, and a blinking blue light shows it is deodorising.
5. When you clean the litter box each week, remove the purifier and recharge it by USB.

Technical specifications

Good to know

You may not notice the full effect on the first day. Allow two to three days of continuous use, and place the purifier in or very close to the litter box for the best results. If your cat dislikes the position, move it a little further away. Want more tips? Read do litter box odour purifiers work and how to eliminate litter box odour, or see the full odour purifier collection.

What is in the box

• 1 × ROJECO Smart Cat Odour Purifier
• 1 × snap cap with double-sided tape
• 1 × USB charging cable
• 1 × user manual

Frequently asked questions

How long does the battery last?

The manufacturer says up to 7 days on a full charge. Recharge it by USB each time you clean the litter box.

Do I need to buy filters or refills?

No. It has no filters, cartridges or refills.

Does it work with a covered litter box?

Yes. The pictures show it with open, semi-closed and fully enclosed litter boxes, and it also suits other small spaces.

How loud is it?

The manufacturer lists under 20dB.

Does it add a scent?

No. It is fragrance-free and uses oxygen and negative ions instead of perfume.

How far from the litter box should I mount it?

Mount it 8 to 16 inches (about 20 to 40cm) away, on a clean surface.

How do I choose a mode?

Use the slide switch on the back: off, or gear 1, 2 or 3. The table above shows how long each gear works and rests.