Feliway Optimum is one of those products that sounds too good to be true—a pheromone diffuser that supposedly calms stressed cats without any medication. This starter kit gives you everything needed to test the concept: the plug-in diffuser unit and a 48ml vial of synthetic feline facial pheromones.
Here's what actually matters: the science is legitimate. Cats naturally release calming pheromones when they rub their faces on things, and Feliway mimics those chemicals. Vets genuinely recommend it for anxiety, spraying, and stress-related behaviours. The "Optimum" formulation is their latest blend, supposedly more effective than the original.
The reality, though? Results are inconsistent. Some cats show noticeable improvement within days—less spraying, reduced aggression, calmer behaviour. Others show absolutely no change whatsoever. It depends on your cat's personality, the source of stress, and frankly, a bit of luck. I've seen it work brilliantly for stress-triggered inappropriate elimination but do nothing for naturally aggressive cats.
At £17.66 with this 28% discount, you're paying roughly £0.37 per day for a month-long trial. Compare that to other calming solutions—treats, supplements, or medication—and it's reasonable. The diffuser itself is subtle and unobtrusive; you just plug it in and leave it running.
Downsides: it only covers roughly 700 square feet, so multi-room homes need multiple units (expensive). The refills aren't cheap long-term. And if it doesn't work, you've lost £17.66.
My verdict: worth trying if your cat shows stress signs and you haven't tried pheromone therapy before. The starter kit price is fair, and there's genuinely no downside besides cost. Just keep expectations realistic—this isn't a magic fix, it's one tool among many.