Thermacell Mosquito Repellent is a compact device that offers a unique way to keep mosquitoes away from humans. The device is refillable and it allows users to easily refill the device as needed. It works by vaporizing a small amount of insecticide to create a bug-free zone. Above all, this eco-friendly device is a safe and reliable option for outdoor activities as well and is perfect for keeping mosquitoes away without touching your skin. It does not have any smells, sprays, chemicals, or other harmful substances as compared to other devices.