Wow. We have tried all sorts. Plug ins, tablets etc but this result is from the spray alone. Bonfire night (Thursday) was awful. Cowering, hiding and shaking. This was delivered the day after and what a difference. We are now on Saturday night after bonfire night. Fireworks going off all around and we have a calm, chilled and relaxed cat. Amazing. A must for any petrified, anxious animal.