Keep intake and exhaust open
Use the purifier maker's wall and furniture clearances. A unit hidden behind the litter box or inside a cabinet cannot circulate the room effectively.
Avoid blowing directly across litter
Strong exhaust can move dust and litter or make the cat avoid the box. Place the purifier nearby but outside the digging and exit path.
Protect the purifier from accidents
Keep cords, controls, filters, and air-quality sensors away from spray, tracked litter, and cleaning liquids. Use a stable floor position that cannot be tipped.
Source control stays first
Scoop, replace litter, clean the box, wash nearby surfaces, and ventilate appropriately. Filtration supports the routine but cannot remove waste that remains in the room.