You can prevent damage by applying insecticides to keep chinch bug numbers low. Spectracide Bug Stop Insect Control Granules, Bayer Advanced 24-Hour Grub Control or Scotts Lawn Pro Insect Control w/Fertilizer are registered for use in Florida. However, an integrated pest management program, or insecticide resistance management program, needs to be implemented to keep the grass healthy and chinch bug populations low.Responsible use of slow-release nitrogen fertilizers may help manage populations. As will controlling overuse of irrigation.