How to Get Rid of Biting Black Flies
- 1). Dam and clear the debris from the ponds, small lakes, streams and creeks. Black fly larvae require debris to cling to, and running water to feed.
- 2). Place BTI cakes or mosquito dunks in water sources. BTI should be placed in water breeding grounds three to four weeks before the peak black fly season. Check with local conservation officials for the best timing in your area.
- 3). Apply BTI in various spots in the creek or stream to ensure adequate dispersal of the larvae killer.
- 4). Check BTI cakes periodically to ensure they haven't completely dissolved and that there is a constant supply of BTI in the water. BTI cakes can last up to 30 days and have to be replaced throughout black fly season to be effective. Replacing mosquito dunks every 15 to 20 days is recommended to be safe.
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