Feliway diffuser starter pack gives you 1 diffuser plug in unit and 1 30 day refill these work to help your kitty deal with changes in surroundings or challenges like moving homes or a new family member the diffuser is effective in an area of 70 sq meters leading cat behavior product feliway is the uks leading cat behavior product and is trusted by vets worldwide feliway spray is not harmful to humans or other pets feliway diffusers are developed after years of veterinary research how do