• In this video, This Old House landscape contractor Roger Cook explains how fuel-powered bug zappers work.

    1. Refill the propane tank every three weeks.
    2. Frequently empty the mesh filter of dead mosquitoes.
    3. Replace the octenol attractant every 21 days.
    4. Twist off the plastic cap from valve stem on mosquito trap. Attach brass coupling to stem, then screw on carbon dioxide cartridge. Hand-tighten the cartridge, then back it out half a turn. The cartridge will blow debris from the fuel line.
    5. Use setting tool to reset the valve pin on propane tank. Screw the tool all the way into valve to reset pin.
    6. To reset the pin in the gas-hose regulator, screw the resetting tool into regulator.
    7. Place the mosquito trap in the shade or close to standing water.
    • Difficulty: Easy
      Simple maintenance, no skills required
Ask TOH users about Yard & Garden

Contribute to This Story Below

      Video Directory

      Selected Topic/Section

      Tools List

      • resetting tool for propane tank
        Resetting tool
      • gas-hose regulator
        Gas-hose regulator

      Shopping List

      Propane mosquito trap

      Propane gas

      Octenol attractant, used to lure mosquitoes to the trap

      Carbon dioxide cartridge, used to clean out fuel line