Adaptil Calm On-The-Go Collar Medium to Large 70cmThe Adaptil Collar is easy to use. The dogs body temperature warms the collar and encourages the diffusion of pheromones into the local environment. The Adaptil Collar is easy to use and convenient as it releases the dog appeasing pheromone constantly (even when the dog is outside). The dog's body temperature and close contact warm the collar and encourages the diffusion of pheromones into the local environment. It is essential the Adaptil Collar is