Usage: peel the protective film from the adhesive base, stick the device to a clean, flat, dry area of the dashboard and press firmly for a few seconds. The solar panel powers the propeller when it receives sufficient light. Maintenance: clean periodically with a soft cloth to avoid dust on the solar panel or propeller; avoid prolonged exposure to excessive heat. To move the unit, detach the base carefully (a thin blade or dental floss may be used to avoid scratching the dashboard). Remove adhesive residue with isopropyl alcohol or a dashboard cleaning solution. How to add essential oil: open the top of the helicopter to access the small absorbent pad, apply 2–3 drops of natural essential oil onto the pad (do not overfill to avoid leakage), close the cover, and reapply a few drops when the scent decreases. Recommended to use natural essential oils rather than synthetic perfumes to prevent sticky deposits on the mechanism. Auto Scents