The collar steadily releases a synthetic analogue of the pheromone nursing mother dogs produce to reassure their puppies. Worn snugly against the skin, body heat helps activate the diffusion so the calming signal travels with the dog rather than staying confined to one room. Each collar is fully adjustable and designed to remain on the dog continuously, aside from bathing or swimming, for up to three months before replacement. It can be worn at the same time as an antiparasitic collar without affecting either product's performance. The packaging is a recyclable cardboard box printed with plant-based ink. Fitting involves sliding the collar through its loop, placing it around the neck, adjusting for a comfortable snug fit, and trimming any excess length.