Chemical-Free Operation: Uses ultraviolet/blue light wavelengths to lure mosquitoes, flies, and moths without toxic sprays or coils.Dual Placement: Equipped with a top ring to hang from ceilings or patios, as well as a flat base to stand securely on tables.Usage Tip: For best results, place the lamp near doors or windows at a height of 0.8 to 1.2 meters, and turn off competing room lights a short time before sleeping