We have 3 cats and recently had fostered our daughters cat for a week. I work at the vets so was able to grab a bottle. I had kept the foster cat (a male) in a separate room to the others, but feared my other male may still smell his scent, and the girls too. I was more concerned with my male cat as he is very susceptible to any change and would undoubtedly not welcome a male intruder 😉 I sprayed the Pet Remedy around the room where my three cats were, and also on their beds, just before the new lodger arrived. All was instantly calm! I also sprayed it in the room where the lodger was staying 😀 All was calm. I need not have worried about our new friend as he was the most chilled cat we have ever known, I was more concerned over our male. Now usually with all of ours being kept in the kitchen of the house for 4 days, they’d be crying and scratching at the door to get out – without a doubt this would be the case, but not with this spray. It is a miracle worker. All of ours were incredibly calm and chilled throughout the 4 days. The smell is not pleasant – reminded us of an old unwashed P:E kit, or smelly trainers, but it soon fades. More importantly, the cats didn’t care at all. I could even spray it on them and they never batted an eyelid (and as you know, most cats run a mile when a spray goes off). I highly recommend this for any occasion where you are introducing a new pet, taking your pets on a journey, to the vets or on firework night, etc. I let my daughter take it on her drive to London – where our little lodger is now living for 6 months while she moves house. He was as calm as can be! It’s a little cheaper from the vets – £11 😉