Includes black blowfly (Phormia regina)
Management-chemical control
- permethrin screw worm aerosol (Durvet)-Spray at a distance of 4 to 8 inches from the area to be treated with muzzle pointed at wound. Spray the area until it is completely wet (3 to 10 seconds are usually enough). The area surrounding the wound should also be sprayed. This product is not recommended for use in deep wounds. Re-treat after 4-6 weeks if needed but not more than every 14 days. Remove feed and water while spraying.
- permethrin spray, paint, or dip-Do not use within 14 days of slaughter. Sheep only.
- rosemary and peppermint oils-Follow label for dosage and precautions.