Working Principle: The Eliminator Mosquito and Fly Trap to trigger a photocatalyst (photocatalysis reaction) to simulate the human breath to lure mosquitoes, and then get sucked into the device by the fan located inside the device. so that mosquitoes dry dehydration and death Safe & Effective: No chemicals, no pesticides & odor free, get rid of all flying insects and bugs without the use of pesticides or dangerous chemicals. (such as mosquitoes, flies, gnats, wasps, beetles) it’s ideal to help keep bugs away from a baby or small child. The fly catching trap adopts the ABS plastic material Shell and durable LED light bulb to ensure quality and safety, will last for many years to come!