FUNCTION: - To repel mosquitoes for 12 hours consistently. WHEN TO USE IT? 4. Ensure that coil is used in rooms with good air circulation 5. You may place coil in front of the room to repel mosquitoes and prevent them from flying into the house 6. Use coil when you are out doing gardening or barbeque DIRECTIONS FOR USE: 4. Separate the coils carefully starting from center. 5. Place one coil onto the metal stand provided. 6. Light the outer end of the coil. Each coil will be effective to repel mosquitoes for 12 hours in a 60 m3 room. WARNING & CAUTIONS: Harmful if swallowed. Use with caution to avoid fire hazard.