Thanks for your review and we are sorry Thermacell isn't meeting your expectations. Please contact us at service@thermacell.net or 1-866-753-3837 and we'll make this right with a replacement or refund (receipt required for refund). All Thermacell products come with a 100% Satisfaction Guarantee. Before you reach out, we would suggest trying two things: 1) Please ensure you see a small light through the view hole to ensure the device is on. 2) If your device will not turn on, please let the fuel flow for 2 minutes without pressing start. This can purge any dust or debris that may have settled inside of the device. If this doesn't solve the problem, please contact us.