Sticky Roll™ effectively catches, controls and eliminates flies because it’s based on their natural habits. Flies follow the warm updrafts in rooms and barns, seeking a resting place near the ceiling. They become entrapped in Sticky Roll, then become an irresistible attractant to other flies. No baits, toxins, or pheromones are necessary. Soon the tape is black with dead flies. When a length of tape is full, crank it up, flies and all onto the disposable take-up reel. Fresh tape is rolled out at the same time, ready to grab more flies.