How does a motion-activated litter deodorizer detect a cat in the home?
A motion-activated litter deodorizer detects an event, not a cat's identity: its sensor reacts when movement changes the area it monitors. To understand what your unit is detecting, watch whether it responds as the cat crosses that area. If it does not, check the current instructions for the permitted placement and operating state before moving the device or assuming the sensor is faulty.
Motion, not identity, starts the response

The sensor monitors a limited area near the litter box. When a cat enters, leaves, or passes through that area, the change can start the deodorizer's programmed response. The sensor does not inherently know the animal's name, distinguish one cat from another, or prove that the litter box was used. A person, another pet, or a moving object may also create a trigger if it crosses the same sensing area.
For broader guidance on how cats respond to their surroundings, see the AAHA behavior and environmental needs guidelines.
The Meowant Smart Odor Remover MW-OR01 is suitable for a litter area where an activity-based response and a separate idle refresh are useful. It is described as releasing a light floral fragrance when a cat enters, purifying after the cat leaves, and refreshing every six hours while idle. Those responses depend on the device being placed and operated as its current instructions require.
Why detection can be missed or triggered by something else
A missed response does not necessarily mean the device cannot detect your cat. The cat may have moved outside the monitored area, an object may be blocking the sensor, or the unit may not be in the required operating state. Use the device's instructions to identify its sensing side and allowed placement, then keep that area clear. The useful result is consistent activation when the cat crosses the intended approach area-not activation merely because the device is somewhere near the litter box.
An unexpected response usually means that some other movement crossed the same area. Check what moved at that moment before changing settings or placement. If the device responds inconsistently after the sensing area is clear and the operating state matches the instructions, use the product's current troubleshooting guidance rather than guessing at an unsupported mounting position or sensor range.