Check the listing for details. Dog Calming Pheromone Diffuser Refills: Dog Calming Pheromones Diffuser Refills. Condition: New. Listed at 17.49 USD. The ProElobara Dog Calming Pheromone Diffuser Refills are specifically designed to help reduce stress and anxiety in dogs. These refills contain pheromones that mimic the natural calming agents produced by dogs to create a sense of well-being and relaxation. Perfect for pet owners looking to create a calming environment for their furry friends, these diffuser refills are easy to use and provide long-lasting relief for dogs suffering from separation anxiety or stress-related issues.