Want to include an organic product in your fly-control program? Newly approved by the EPA for sale to the equine market, BalEnce Biopesticide — available as a liquid spray or as a bait — targets flies with a naturally occurring, host-specific fungus up to 50,000 square feet. Also available as a bait in seven- or 40-pound pails.(Beauveria bassiana) that kills adult flies but doesn’t affect humans, horses, pets, the environment — or other insects that help control flies. A 15-ounce spray bottle treats

Cost: $167.95 (spray bottle); $13.40 (bait station); $95.15 (seven-pound pail); $218.40 (starter package of two seven-pound pails and five bait stations).
Contact: Terregena Inc., (919) 789-0306; www.terregena.com.