This charm is a natural pheromone and herbal
formula that attaches easily to collars, crates or
wherever it is needed. It has an innovative
delivery system for fast relief in stressful
situations. A package includes 1 Charm and 2
Calming Discs; discs are effective up to 8 hours.
Small discs 1 1/8" diameter, Large 1 5/8" diameter.