Waste of money! Better off buying an air freshener plug in!
Product was left switched on constantly for nearly 30 days (it ran out before 30 days) and had no effect on my cats. My sassy female Nala sits quite close to where the defuser was plugged in and continued to snarl and hiss at the other 3 cats who don't actually cause her any trouble and are quite weary of her lol. I understand that this product may not work straight away but it's a fair bit of money to pay out and the product not work. Why spend another 15 quid on a refill that may not work?