Feliway cat calming plug-in diffusers are scentless and species specific so they will have no effect on humans or other pets. FELIWAY OPTIMUM DIFFUSER AND REFILL | The Feliway Optimum pheromone diffuser for cats is the newest and most advanced Feliway formulation with over 25 years of science and research into pet welfare, to help relax and de-stress your feline friend.
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