Research overview: house soiling and inappropriate elimination in cats

House soiling is among the most common behaviour problems leading to relinquishment of cats, and this overview surveys its causes and management. It distinguishes urine marking, a communicative spraying behaviour often tied to stress or social conflict, from toileting outside the litter box due to aversion or preference issues, and covers the importance of ruling out medical causes such as urinary tract disease. The survey examines factors including litter type and box cleanliness, box number and location, substrate and site preferences, and household stress, and the evidence-based approaches to resolution through litter management, environmental modification and reducing conflict. It situates inappropriate elimination within feline welfare and the human-cat bond, emphasizing that understanding the cat's needs and motivations, rather than punishment, is key to resolving a problem that frequently endangers cats' homes.