Devon Rex anxiety: collar vs diffuser for open-plan flats

Cat anxiety is real and genuinely underestimated — cats mask stress well, so by the time you're noticing it, it's usually been building for a while. You've already spotted the core problem: diffusers are designed for a single room of roughly 70 square metres, and an open-plan flat defeats that entirely. The pheromone just disperses too fast to reach effective concentration across a large undivided space. A collar is a logical next step because the pheromone travels with your cat rather than trying to fill a room. Before I point you toward the right one — what's your Devon Rex actually doing that's telling you she's anxious, and has anything changed recently or is this more of a long-standing background stress thing?

That pattern makes sense — the move was the original trigger, and without consistent pheromone coverage in the space she actually spends most of her time, the anxiety has just been quietly compounding. The belly overgrooming is worth watching; if it's getting worse rather than plateauing, it's worth a vet check alongside whatever you try, because that can escalate. But on the product side — what's your Devon Rex's name, and roughly how much does she weigh? Devon Rexes tend to run small and it matters for collar fit.

Good — that's really useful to know, and it means you can focus fully on the anxiety side. For Miso I'd go with the Feliway Optimum collar. It's the newer formulation compared to the classic Feliway collar — it uses a broader synthetic pheromone complex that targets more anxiety signals at once rather than just the territorial facial pheromone. At 3.5kg she's well within the fit range, and because it sits on her, the active zone travels wherever she does — the sofa, the bedroom, wherever she retreats to when she hides. Each collar lasts about four weeks. The key with a Devon Rex is that their coats are so fine and close that you do need to make sure it's sitting against the skin properly and isn't too loose, or the pheromone dispersal is reduced. You don't need to ditch the diffuser immediately — running them in parallel for the first month, with the diffuser repositioned to the centre of the open-plan area if possible, is actually more effective than switching cold. After four weeks you'll have a much clearer read on whether the collar alone is doing the job.

Typically you'd see the first signs within one to two weeks — usually the hiding reduces before anything else, because that's the most reactive behaviour. The sofa avoidance tends to come next, once she's feeling safer in the space generally. The overgrooming is almost always the last thing to resolve and the slowest, because it becomes a habit loop on top of the anxiety — even once the underlying stress is better, the grooming pattern can persist for weeks. If after two full collar cycles (so roughly eight weeks) the belly grooming hasn't reduced at all, it's worth going back to your vet to discuss whether a short course of anti-anxiety support alongside the pheromone would break the cycle faster. But for most cats in Miso's situation, consistent pheromone coverage alone does get there — it just takes patience with that particular symptom.

That's a solid plan. One last practical note — when you first put the collar on Miso, do it in a calm moment rather than when she's already hiding or stressed, and let her sniff it briefly before it goes on if she's willing. Devon Rexes can be particular about new sensations on their skin. Give it the full four weeks before judging it, and good luck with her — gradual-onset anxiety like hers tends to respond really well once the coverage problem is actually solved.