For optimal performance, replace every 3 to 5 months.
Fly Killer Bulbs 13in UV Replacement Tubes for 10/20W Electric Fly Insect
FSL OEM T8 F10W Fly Killer Bulbs (2 Pack), 13In UV BL368 Replacement Tube for 10
FSL BL T8 F10W Fly Killer Replacement Bulbs 13in UV Tubes for 10/20 W Fly Insect
2 Pack Fly Killer Replacement Bulbs BL T8 10W, 13In UV Lamp Light Tube
Caldarax 2 Pack FSL BL T8 F10W Fly Killer Replacement Bulbs, 13In UV Lamp Light
