Beaphar Calming Collar for dogs effectively reduces problem behaviour arising from stressful situations in dogs of all breeds, sizes and ages. Using Valerian and Lavender which are often used in human healthcare to manager stress. It leaves dogs feeling calm, settled and relaxed, reducing potentially destructive problem behaviour. When dogs are more secure in their environment they are more relaxed thus making them better house companions. Keeping dogs calm will help to prevent excessive barking, chewing, inappropriate urination and can be essential in dogs that suffer separation anxiety. Once fitted, Valerian will be released immediately and the dog will begin to relax within approximately one hour. Size: 60cm Effective for up to 6 weeks