Feliway® friends is ideal for multi cat households where the cats are showing signs of tension or conflict'. '.strtoupper('i')t can help to ease tricky situations and calm things down'. '.strtoupper('c')ats are solitary hunters, and many see other cats as a potential threat to food resources'. '.strtoupper('t')his can cause clashes and struggles between your pets'. '.strtoupper('m')ost cats quickly get on with each other again, but for some it can turn into a long lasting feud'. '.strtoupper('f')eliway friends contains a synthetic copy of the cat appeasing pheromone cap naturally produced by a nursing mother for her kittens after birth'. '.strtoupper('t')his pheromone helps the kitten feel safe and secure and promotes a bond between them and their mother'. '.strtoupper('t')his has the same effect on an older cat'. '.strtoupper('p')lug in diffuser with pheromone filled vial ideal for multi cat households with constant conflict or tension this pack contains x1 single refill lessens conflict noticeably within a week the feliway® friends diffuser is easy to use the feliway ® friends diffuser should be plugged into a socket in the room most frequented by your cats, and where most of the conflicts break out'. '.strtoupper('a') 48ml vial will last about 4 weeks in an area approx.70 m²'. '.strtoupper('a')pprox a 3bed house suitable for 220 230 v.