DynaTrap 41050 UV Replacement Bulb for DynaTrap Mosquito & Flying Insect Trap Models DT1050, DT1100, DT1260, DT250IN, DT300IN, DT1000-12V, DT1125, DT1200, DT1210 and DT1250Brand: DynaTrap Color: Black Features: Replacement Bulbs Designed for use with DynaTrap models DT250IN, DT300IN, DT1000 12V, DT1050, DT1100, DT1125, DT1200, DT1210, DT1250, and DT1260 Attracts Mosquitoes The fluorescent UV light is an essential component of your DynaTrap, helping to naturally lure mosquitoes and other insects into the trap Maximize Effectiveness For maximum trapping power, replace bulbs every 3,000 hours (approximately every 4 months)