Tips for best result: Please close the windows and door, turn off all the lights in the house. Don’t turn it on until bedtime, please always turn it on a few hours in advance. Please put it about 1 meter high, because the mosquito flies at an altitude of about 90 cm. Please do not open the mosquito storage box frequently. It usually takes about 3 hours to air dry the mosquito to death. Physical Anti-mosquito Principle: 1. Attractant for attracting mosquitoes 2. 395MM light wave attracting 3. Anti-mosquito by electirc mesh 4. Suctioning mosquitoes by 1800rmp eddy 5. Obstruction hopper for preventing escape 6. Metal box for physical air drying What's the function of carbon dioxide mosquito attractant? The function of the mosquito attractant is to simulate the favorite odor of mosquitoes (simulating human sweat), attract all kinds of mosquitoes, and enhance the mosquito-killing effect. The device can also kill mosquitoes without using the attractant. The attractant with the smell which is slight and normal, please don't worry. The mosquito attractant is non-toxic, it is safe to use. The elderly, pregnant women, and children can also use it. The mosquito attractant belongs to gas and it is volatile. It is recommended to replace it once a month.