Toprolong the scent you should rotate scent pads. For maximum strength you should remove scent vent and rotate scent pads to upright position. Do not place scented pads on fabric, furniture, plastic or painted surfaces. WARNING: Internal edges can be sharp once opened. Handle with care and keep out of reach of children. 

CAUTIONS : 1. After contact with skin, wash immediately with plenty of soap and water.  2. In Case of contact with eyes, rinse immediately with plenty of soap and water and seek medical advice. 3. If swallowed seek medical advice immediately and show label to doctor.