Large Filth Flies House FlyĪdults are 1/8″ to 1/4″ (4-8mm) long and are gray with four dark stripes lengthwise down the thorax. Sanitation is key to managing “filth” flies. They also may contaminate food and surfaces by defecating on them. When feeding, house flies regurgitate their stomach contents onto food to liquefy it before ingesting it. Filth flies often feed and lay eggs on garbage, manure and carrion before contaminating human foods and food preparation surfaces by landing on them. The habits of filth flies favor the spread of bacteria and other disease-causing organisms. These factors affect how different fly situations will be handled. The other types of flies breed outside and are attracted to buildings by food odors, temperature gradients in the air, and exterior lighting. Of these groups, only certain types of flies in the small fly group will be found regularly breeding inside structures. The flies that infest structures may be discussed in five separate groups: filth flies, small flies, overwintering flies, biting flies and gnats and midges. Once the sources are eliminated and steps are taken to secure possible pest entry points, the infestations will be gone. The source can be decaying garbage or even old, rotting food or leaking water. Flying Insects: Fly Control, Bees & Wasps, Indian Meal MothsĪll flying insects, whether it be flies, bees, indian meal moths, etc., come from a source.
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