100% DE-STRESS FORMULA: The calming diffuser refill & plug-in is one of the best anti-stress diffusers for cats that helps to reduce anxiety. A solution to decrease fighting between cats and allow them to live in harmony. DRUG-FREE: The diffuser emits a copy of the harmony marker pheromones. This allows cats to feel at ease and maintain a harmonious connection with one another. CORRECTION PROBLEMATIC BEHAVIOR IN PETS: Effective for 90% of cats to reduce fighting, scratching, urine marking, hiding, and other behavior among cats in the household. HOW TO USE: The diffuser kit covers an area of up to 700 square feet for 30 days of use. After that, you need to replace the refill. Plugin upright into a wall outlet with vents facing up and never into power strips. Unsafe use can cause the diffuser to increase odor or leak. FIRST EFFECT: For best results, keep the diffuser kit connected for at least 7 days at all times. Plug into a standard electrical outlet in your cat's favorite room. For maximum calming results, keep the diffuser plugged in 24/7 and replace the refill bottle about every 30 days.