Is your cat peeing outside the litter box, scratching your furniture and carpet, or hiding on a regular basis? These behaviors may be caused by fear and anxiety. FELIWAY products are a vet recommended, drug free, and clinically proven to help alleviate many of the unwanted behaviors cat owners deal with. FELIWAY CLASSIC provides “happy messages” by mimicking the natural feline reassuring messages (pheromones) to make cats feel calm and comfortable at home. This product has been found to reduce scratching, spraying, and hiding for 90% of cats, and many owners see results within 7 days. Cats are also very sensitive to change, so if you anticipate changes in the home (moving, renovation, recorating, new pets, new family members, etcs.), FELIWAY is very effective in helping your cats remain calm, and adapt to the changes without unwanted behaviors. The FELIWAY Classic Diffuser Kit includes one diffuser, and one refill vial. You should plug your diffuser in the room(s) where your cat spends the most time - each diffuser covers up to 700 sq. feet. Make sure your diffuser isn't covered by curtains, or behind furniture. Each refill can last up to 30 days. For maximum effectiveness, you should replace your diffuser every 6 months. Make sure to follow the instructions when plugging in your diffuser, and plug the diffuser in upright.Starter kit includes 1 diffuser head and 1 vial; to maximize effectiveness, replace the vial once a month, and the diffuser every 6 months. FELIWAY Classic heated diffuser covers up to 700 square feet; for the best results, position the diffuser where your cat spends most of his or her time, and avoid plugging the diffuser in under shelves and behind doors, curtains, or furniture. FELIWAY Classic is a drug free solution that mimics cat’s natural facial pheromones, which may help your pet feel calmer in common stressful situations. Reduces urine spraying in 9 out of 10 cats. Vet Recommended and #1 selling solution: FELIWAY Classic helps cats adjust to challenging situations, and curbs stress related unwanted behaviors such as spraying, peeing, scratching, and general fearfulness.Date First Available: July 15, 2004. Is Discontinued By Manufacturer: No. Best Sellers Rank: #2,292 in Pet Supplies. Customer Reviews: 4.0 out of 5 stars 22,982 ratings 4.0 out of 5 stars. Item model number: C23830X. Country of Origin: France. : B01AVIIFRA. Manufacturer: Central Garden & Pet. Item Weight: 4.8 ounces. Product Dimensions: 1.5 x 2.5 x 5 inches.