Yes, blue sticky roll traps can attract drosophila, commonly known as fruit flies. These traps are effective in catching and trapping a variety of flying insects, including fruit flies. The blue color of the sticky roll attracts the flies, and once they come into contact with the sticky surface, they are trapped and unable to escape. This is a non-toxic and eco-friendly method of controlling fruit fly infestations in homes and gardens. When used correctly, blue sticky traps can help prevent fruit fly populations from spreading and causing damage to crops. So, if you're looking for a safe and effective way to get rid of fruit flies, using blue sticky roll traps could be a great solution.