Instructions for refreshing catnip: 1. Pull the Inner "hidden" flaps outside of toy. 1. Insert/replace catnip. 1. Tuck flaps back in and press firmly to seal. Gently twist the filled toy to release catnips' herbal oils. To maintain maximum freshness, freeze extra catnip until needed. Important: Inspect product frequently. Supervised use only. Discontinue use if worn, loose or torn pieces occur.