The horsefly is a large fly also known as the deer fly. The female fly feeds on blood and is the most painful and irritating. Horseflies breed in wet areas, and eliminating wetlands will reduce a horsefly population. Killing horseflies is a problem that many people living in the country have to face. Horseflies love damp areas, as well as places where larger animals live, such as cows and horses. You can kill horseflies in a variety of ways, but no method is 100 per cent effective. At best, you will reduce the number of flies in your area and also prevent the flies from biting humans or animals.
Spray greenery around the outside of your home, the perimeter of your pool or any ponds and any areas of the yard that have marshy or wet conditions with a insecticide designed to kill horseflies.
Apply an anti-fly wash to the fur of horses, cows or dogs to prevent the flies from attacking these animals. These washes are not safe for use on cats.
Kill stray flies with a fly swatter. Take care to use enough force to kill the fly at once, or else you may increase the chance of the fly trying to bite you. Flies are not as vindictive as bees or hornets, but their bites still hurt.
Use a small end table with an open bottom that you don't mind getting ruined outdoors in the elements.
Screw an S-shaped or D-shaped screw into the middle of the table bottom. Tie a sturdy piece of string to the screw.
Tie the string to a dark-coloured ball. Glue sticky fly paper to the bottom of the table. The horseflies will fly over to investigate the ball and get stuck in the paper. Place the trap near areas where horseflies naturally congregate, such as wet areas, swimming pools and animal cages.