If you see a blue bottle fly in your house, you have a potential problem. These flies are attracted to dead or decaying organic matter and will reproduce and feed on it. They can enter your house through closed doors and screened windows. They are more common in the summertime.
These flies are metallic blue, and their body is covered in patches of short hair. When they fly, they make a buzzing noise. They live outdoors and feed on garbage, decayed meat, and organic matter. They transmit several diseases and are considered pests. If you find a large population indoors, it could be a sign that you have a dead animal.
Blue bottle flies can live for up to six weeks. Females lay eggs in decayed meat or garbage. If you notice a bottle fly in your home, check for its larvae. They can be treated with a spray designed for crawling insects. If you notice a blue bottle fly, they are likely to be a sign of the presence of a dead animal.
House flies are closely related to blue bottle flies. However, they are slightly smaller and duller in appearance. They feed on food that has sat out, and they are especially common around garbage bins and decayed organic matter.