Enclosed furniture can make some problems less obvious from across the room because the tray and surrounding surfaces are out of sight. That is a reason to keep a consistent inspection and cleaning routine, not a reason to rely on whether the room smells fresh. Open the cabinet regularly, remove waste promptly and check for spills or litter trapped behind the tray. Consider what the cat experiences inside the enclosure, where any odour may be more noticeable than it is to you.
Avoid using strong fragrances to mask smells. If odour persists after appropriate cleaning, inspect the tray, surrounding surfaces and ventilation rather than assuming the cabinet itself is solving the issue. New changes in urine, toileting frequency or behaviour deserve veterinary advice. A successful hidden-litter setup makes the furniture discreet to people while keeping maintenance visible and convenient to the person responsible for it.
Use the cleaning routine, rather than the cabinet’s closed appearance, as the reminder to inspect it. Check behind and underneath the tray when servicing it; a small unnoticed spill there can persist after the visible litter has been scooped.
For product comparisons alongside this advice, see OakAlcove litter cabinet and Library House litter cabinet. The details below explain their sizes and uses.
Further reading: rspca.org.uk; battersea.org.uk.
OakAlcove litter cabinet
Library House litter cabinet
Ivory Gallery cabinet and tree