Cats naturally produce soothing pheromones, which allow them to calm themselves in various situations. The Francodex Anti-Stress Diffuser contains synthetic versions of these pheromones, creating an environment where your cat will feel safe. It is especially recommended for use in the event of inappropriate behavior (urinary marking, excessive scratching) caused by stressful situations, such as moving, changing environments, the arrival of a new animal, the birth of a child, exposure to loud noises, or social events. The ANTI-STRESS DIFFUSER is effective for 6 weeks.