VETCARE CALMCARE SPOT-ON FOR CATS AND KITTENS The Pheromone used in VETCARE Calmcare Spot-On for Cats and Kittens is an effective solution to help calm, comfort and reassure cats and help reduce unwanted behaviour. Using pheromones recognised by your cat, VETCARE Calmcare Spot-On for Cats and Kittens helps them feel at ease to reduce common problems such as excessive meowing, aggressive behaviour, fighting, avoidance, hiding or general feelings of anxiety.