Stinger Indoor Insect Trap Easy Pull Out Drawer For Emptying Environmentally Safe UV White Light Attracts Flying Insects To Trap Powerful, Quiet Fan Draws Insects Into Internal Trap Where They Dehydrate & Die No chemicals - environmetally safe UV white light attracts flying insects to trap Powerful, quiet fan draws insect into internal trap where they dehydrate and die Top snaps off for bulb replacement. Replacement bulb: B04-N Refer UserManual for troubleshooting steps and corrections