Zyrox Fly Granular Bait features the active ingredient cyantraniliprole, which has no documented resistance issues and is highly attractive to flies, even without a pheromone lure, manufacturer Syngenta reports. This makes Zyrox an ideal rotational partner in Integrated Pest Management programs for fly control. The bait matrix of Zyrox has a lower bulk density than most competitor fly baits, Syngenta reports, allowing for comparable surface area coverage and volume to other baits, but with fewer pounds of bait to carry, move and store. Zyrox has also been approved for use in residential, commercial and animal production sites, and can be used indoors when placed in a bait station.