Feliway provides an effective way to control and manage unwanted feline behaviours such as: urine marking, scratching, stress and anxiety. Feliway diffuser packs contains one Feliway diffuser plug-in unit and one 48ml Feliway pheromone vial. Feliway is a feline facial pheromone, which mimics the cat’s natural pheromones, creating a state of well-being and calmness relieving pet stress. Feliway creates a reassuring environment calming your cat and stopping such problems as scratching, excessive grooming, urine spraying, restoring your cats health and happiness. Essential for a happy multi-cat household, one Feliway diffuser unit will cover 50-70 sq.m. of space. Therefore, please check your house size as you may need more than one.Useful in acclimatising cats to new environments. Feliway creates a calming effect. 1 vial lasts approximately 4 weeks.