Are your cats fighting, or is there tension between cats in your household? FELIWAY MultiCat is vet recommended, drug free, and clinically proven reduce tension and fighting among cats in the home. Signs of tension could include chg, blocking, staring, fighting, or hissing among cats. By mimicking the natural feline appeg messages (pheromones), FELIWAY MultiCat sends “harmony messages” to help your cats get along more effectively, and avoid tension, conflict and fighting in the home. Most cat owners see a 70% reduction in conflict in 3 weeks. The FELIWAY MultiCat Refill includes six refill vials (diffuser head not included). You should plug your diffuser in the room(s) where your cat spends the most time, and make sure it isn't covered by curtains, or behind furntiure. Each diffuser covers up to 700 sq. feet, and each refill can last up to 30 days. For maximum effectiveness, you should replace refills every 4 weeks, and your diffuser every 6 months. Make sure to follow the instructions when plugging in your diffuser, and plug the diffuser in upright.This product includes 6 refills that each last for up to 1 month (diffuser not included); to maximize effectiveness replace the refill once a month and the diffuser every 6 months. Plug the diffuser in with the vents facing up, and avoid placing the diffuser under shelves and behind doors, curtains, or furniture: for the best results, place in the room(s) where your cat spends most of his or her time. FELIWAY MultiCat diffuser is a drug free solution that mimics a mother cat’s natural nursing pheromones to stimulate social contact and acceptance. 84% of Cat Owners saw significant improvement when using FELIWAY MultiCat*. FELIWAY is vet recommended, and the #1 selling solution: FELIWAY MultiCat may help to reduce common signs of tension between cats at home such as conflict, fighting, chg and blocking.Best Sellers Rank: See Top 100 in Pet Supplies. Country of Origin: France. : B08935Z51S. Manufacturer: Ceva Animal Health. Date First Available: May 22, 2020. Item model number: D89442D. Product Dimensions: 5 x 3 x 3 inches; 12.63 Ounces.