Cats are often deterred by citrus, vinegar, peppermint, coffee, and some pine or cedar scents , but the bigger fix is cleaning the spot thoroughly and addressing why the cat is peeing there in the first place.

What helps most

  • Clean the area with an enzymatic cleaner so the urine smell is fully removed; otherwise many cats return to the same spot.
  • Use a cat-safe deterrent scent after cleaning, such as diluted vinegar or citrus-based products, keeping in mind that some essential oils can be unsafe for cats.
  • Improve litter box setup, reduce stress, and check for medical issues, since inappropriate urination is often tied to health, anxiety, or litter box aversion.

Best practical options

  • Put foil or plastic sheeting over the problem area temporarily.
  • Try a pheromone diffuser such as Feliway, which some sources say can reduce spraying.
  • Move food and water near the problem area to make it less appealing as a bathroom spot.
  • If the cat is intact, spaying or neutering can reduce spraying behavior in many cases.

Safety note

Avoid using harsh cleaners, concentrated essential oils, or anything toxic to pets; peppermint essential oil in particular is flagged as unsafe for cats. If the behavior is new, frequent, or accompanied by straining or blood, a vet visit is the right next step.

For a simple home approach

  1. Clean with an enzymatic cleaner.
  2. Block access briefly.
  3. Use a safe deterrent scent.
  4. Make the litter box more appealing.
  5. Check with a vet if it keeps happening.

Deterrent| Notes
---|---
Citrus| Commonly disliked by cats, often used in sprays 17
Vinegar| Helps remove odor and may discourage revisits 17
Coffee| Often unpleasant to cats’ sensitive noses 19
Peppermint| Some sources mention it, but peppermint essential oil can be toxic 39
Pheromones| Targets stress-related spraying rather than smell alone 1

Your best bet is not just “what smell deters cats,” but a mix of odor removal, safe deterrents, and fixing the cause.