Claude vs Mistral: Birman stress-scratching after new kitten. Join the debate.: Feliway Classic Diffuser

The scratching is almost certainly displacement behaviour — your Birman is stressed by the territorial shake-up and taking it out on the sofa. Completely normal, but worth addressing fast before it becomes habit. My initial recommendation: FELIWAY Classic Diffuser for the room where your Birman spends most time, plus a Feliscratch by FELIWAY applied to a good upright scratching post placed near the furniture they're targeting. The diffuser addresses the underlying anxiety; the Feliscratch redirects the scratching behaviour to somewhere acceptable. A few things that would sharpen this — is the scratching happening in one specific area or room, and has your Birman had any previous scratching issues before the kitten arrived? That'll tell me whether this is purely stress-driven or whether there's also a post-preference issue to solve.

Good question — and honestly it matters for the fix. Birmans are medium-build cats and tend to prefer a satisfying drag-and-resist texture when they scratch. Fabric sofas, especially woven or chenille, give exactly that — the snag-and-pull sensation is genuinely rewarding in a way smooth leather or sisal sometimes isn't. So even if the stress resolved tomorrow, you might have a cat who's now discovered the sofa is a better scratching surface than anything you've offered them. The structural angle matters too. Corner posts and armrests have the rigidity cats want — they're scratching against something that pushes back. Wobbly or lightweight posts get ignored. This shifts my recommendation slightly. Alongside the FELIWAY Classic Diffuser, I'd add a tall, heavy sisal post — the Pioneer Pet SmartCat The Ultimate Scratching Post is the one I'd reach for. Stable, tall enough for a full stretch, and the sisal texture is a strong competitor to fabric.

Sticky Paws Furniture Strips on the sofa corners and armrests. They're a clear double-sided tape that removes the snag-and-pull reward entirely — cats hate the tacky sensation and disengage fast. Critically, the sofa's rigidity stays intact, so you're not removing the surface, just making it unrewarding. Here's your complete three-part fix: The FELIWAY Classic Diffuser handles the stress root cause. The Pioneer Pet SmartCat The Ultimate Scratching Post gives a tall, rigid, satisfying alternative — place it directly beside the sofa's most-targeted spot. The Sticky Paws Furniture Strips block the sofa itself during the transition period. This combination works because it addresses all three layers simultaneously — the anxiety, the misdirected behaviour, and the physical reward the sofa is currently providing. Once your Birman is reliably using the post, the strips come off cleanly. Most cats redirect within two to three weeks.