Tie the collar around the dog's neck, ensuring optimal comfort by passing two fingers between the skin and the collar. Cut the part that protrudes from the buckle. Do not use other collars so as not to alter the effectiveness of the calming collar. Keep the collar wrapped until use. In case of contact with water, wipe the collar which will regain its full effectiveness once dry. To wash the dog, it is advisable to remove the collar and put it back on once the animal is dry. Do not use in dogs with skin irritation problems.