Discreet Pest Control Services Ltd can supply all the bulbs set out below, please contact us for further information or prices by simply clicking on images and quoting the bulb type you require. For replacement bulbs we would advise that you check your existing bulb for correct size and wattage, this can be found on the edges of the bulb. We recommend that bulbs should be changed every 12 months to maintain maximum effectiveness and ensure the fly machines are working to their full potential. The bulbs listed below are fully compatible with the complete range of fly killing machines seen here.