Helps cats in fearful or stressful situations. Mimics mother cat pheromones produced to calm and reassure babies. Convenient collar goes where your pet goes and is effective both at home and on the go. Proven to modify behavior. Recommended for separation anxiety, excessive meowing, destructive behavior, inappropriate marking, traveling and more. Lavender chamomile fragrance lasts up to 30 days. Breakaway style and fits cat and kitten necks up to 15".