Treating a second-hand scratching post for a new cat

Good thinking getting ahead of this — a second-hand scratching post will be saturated with the previous cat's scent markers, and if your new cat picks up on that, it can cause real territorial stress before they've even settled in. The only products that permanently eliminate those odours are enzyme-based cleaners. Anything else just masks the smell, and cats have a far sharper nose than we do. Before I point you to the right one: is the post rope, carpet-covered, or bare wood? And do you know roughly how old or well-used it is?

Perfect, that's actually good news — sisal is porous enough to hold scent deep in the fibres, but it also soaks up an enzyme cleaner really well. A few years of use means there'll be layered scent deposits, so you want something with a strong enzyme concentration, not a diluted everyday spray. One more thing: do you know if the previous cat was male or female, and were they neutered?

That changes things a bit — unneutered male cat scent is significantly more pungent and persistent, so you'll want a proper heavy-duty enzyme formula rather than a standard pet odour spray. My recommendation is Simple Solution Extreme Cat Stain & Odour Remover. It's specifically formulated for cat odours, uses a pro-bacteria enzyme blend, and it's strong enough to handle exactly this situation. Soak the sisal thoroughly — don't just mist it — then let it air dry completely in a well-ventilated spot for at least 24 hours before your cat arrives. Don't let it dry in a warm enclosed space or the odour can fix rather than lift.

For a well-used post from an unneutered male, I'd do two treatments. Apply the first, let it dry fully, then give it a sniff at nose-level — not your nose level, get close to the sisal. If you can still detect anything musky or sharp, do a second application. The enzymes need moisture to activate, so the second round also helps catch anything the first pass didn't fully reach. Once it's odour-neutral to you, your cat is very unlikely to read it as another cat's territory.

Yes, once fully dry it's completely safe and leaves no residue cats find off-putting. In fact, because the enzyme cleaner removes the foreign scent entirely, your cat will be able to scent-mark it as their own from scratch — which is exactly what you want. A scratching post your cat has claimed themselves is one they'll actually use, which protects your furniture too. You're setting this up really well for a first-time cat owner.