BOB MARTIN Naturals Calmcare Collar for Cats & Kittens effectively assists in reducing problem behaviour arising from stressful situations in cats of all breeds and ages. Using safe, natural ingredients that are slowly released over a period of 4 – 5 weeks, the collar leaves cats feeling calm, settled and relaxed, which assists in reducing problem behaviour. This can be especially important in a multi-cat (or pet) household as cats are particularly sensitive to other animals and changes in their environment. BOB MARTIN Naturals Calmcare Collar for Cats & Kittens contains valerian and lavender, which are often used in human healthcare to manage stress and anxiety and have been proven to help reduce excessive meowing, vertical scratching, scent-marking and other undesirable behaviours in cats. This collar is long-acting, making it effective in assisting in reducing anxiety during the introduction of new additions to the household, frequent travel, vet/cattery stays, thunder (noise) phobias, during party season (particularly when there are fireworks) as well as assisting in the treatment of separation anxiety. Once fitted, Valerian will be released immediately and the cat will begin to relax within approximately one hour.