Insect control system; Includes standard system (1 housing, 1 bulb, 1 cartridge) PLUS 4 replacement cartridges; Can be used as a standard kitchen or dining room light fixture; Cartridge advances automatically for 60 days and signals when replacement is needed; Captured insects are concealed by advancing cartridge; Cartridge installs and removes without touching the sticky surface; 10 times the trapping surface of standard glue board; No poison or electrocution