Do fly traps attract flies?
Similarly, why are flies attracted to fly traps?
Flies are visually attracted to these traps so put them in areas with light, not the darkest part of a barn. They're sticky so flies (and other not so lucky bugs) land on the trap they are stuck and can't fly away.
In respect to this, does Fly Paper attract flies?
A fly paper works on the fact that flies have a strong scene of smell. As I have foretold, a fly paper is coated with an attractant that has adhesive properties. The attractants used in the fly papers can emit food based or pheromone fragrances.
Mix scraps of meat (the older, the better) with something sweet (see list below). Lots of people swear by using rotten fish or shrimp, which probably work best because they smell so much. Bait for Fruit Flies: Use fruit (the riper, the better), apple cider vinegar, fruit juice, syrup, wine, beer, or any combination.