Adaptil Calm 30 Day Diffuser Refill for Dogs 48ml

Plug the diffuser and refill in right side up in an open area where your dog spends the most time. Keep plugged in continuously and replace refills every 30 days. Replace the diffuser device every 6 months. Each diffuser and refill covers up to 70m2 (750 ft2). Best results are typically seen after 3 to 4 weeks of continuous use.