Overview Halcyon-K9 Calming Collar For Dogs treats anxiety and poor behaviors.

  • When smelled by dogs helps address separation anxiety, sound anxiety (loud noises) and travel stress
  • P.E.T. pheromone and essential oil
  • Reduces excessive barking, marking, scratching and aggression
  • Each lavender scent collar lasts for 30 days
  • Fits necks up to 23", cut to fit smaller necks