Patented formula contains 3 feeding attractants plus a fly sex pheromone that flies can't resist. For outdoor use only.
Each 2 quart trap includes attractant. Use with Starbar's 8 x 30gm Fly Attractant. Captivator uses 1 x 30 gm pouch per gal.
Read more about The Problem with Horse Flies – and What to Do About Them