Beaphar CaniComfort is a simple and effective solution to reducing problem behaviour in dogs, such as barking, furniture destruction, urinary marking, excessive licking and scratching, or general feelings of anxiety, this easy-to-use refill is only suitable for use with Beaphar CaniComfort Calming Diffuser It contains a copy of the naturally produced Dog Appeasing Pheromone, which is instantly recognisable to dogs, it is naturally produced by the bitch when she nurses her puppies, and gives a continuous and reassuring message to let dogs know that this is a safe and calm area for them to be in This can be incredibly valuable when bringing home a new dog, helping them settle quickly into their new routine, and each refill is effective for up to 30 days Suitable for dogs of all ages, promotes feelings of reassurance and safety and it calms your pet dogs without sedating Refill and use the diffuser in the room your dog spends most of their time, use continuously, do not switch off when leaving the house or overnight Don't use near open windows/doors or drafts as this will reduce how well the diffuser works