Calming collars for cats typically consist of synthetic varieties of feline calming pheromones, the identical types used in diffuser products like Feliway. Some also contain critical oils like lavender and chamomile. They are not probably the most harmful vital oils within the listing and are usually used in small concentrations https://canine-health-maintenance02223.mdkblog.com/43487073/the-ultimate-guide-to-natural-supplement-for-cats