HOW TO PREVENT FLIES? 

Sanitation is the most effective and important step in controlling flies. All outside trash areas must be kept clean. Garbage should be drained and wrapped in plastic bags before being placed in trash receptacles or dumpsters outdoors. By placing garbage in bags, odours will be reduced, therefore attracting fewer egg-laying flies.  

Eliminate all potential breeding materials such as rotting straw or mulch, manure, garbage and animal excrement. Avoid damp pet foods left outdoors for several days. Eliminate carcasses of dead animals and birds. Any potential breeding material should be spread out thinly in the field and allowed to dry to prevent fly development. 

Dispose of piles of old, wet, lawn clippings, leaves, manure stacks, old wet hay or straw bales and other such debris. Waste piles can be covered with black plastic which will heat the organic matter, destroying fly development. 

At picnics and cookouts, keep foods covered and protected from flies until eaten. Remove fermenting overripe fruits from the ground. Flies may move several miles within a day or two, often originating from unsanitary sites.