In Northwest Louisiana, the beet armyworm (BAW), Spodoptera exigua (Hubner), is a sporatic pest of cotton. To determine if pheromone traps might aid in identifying years the BAW would become a problem, it was decided in 1994 to operate a BAW pheromone trap at the Red River Research Station, Bossier City, LA. With passage in of a boll weevil eradication program in Northwest Louisiana in 1997, it was decided to expand the program from a single trap to a trapline consisting of 8 additional traps extending from near the Arkansas border in northern Caddo Parish to Natchitoches, LA.