Feliway classic cat calming pheromone 30 day refill - 6 pack July 8, 2019 16 32 64 128 Feliway classic cat calming pheromone 30 day refill 6 pack Feliway classic diffuser refill for cats constant calming & comfort at home (2 pack(48 ml)) Feliway classic cat calming pheromone diffuser