We are approaching the end of fly season and so more will be seen as mating season is wrapping up. Cool Fall temperatures encourage open windows and if you don't use screens, flies will find their way in. It's important to identify the fly type as different types have different breeding sources. This will aid your treatment. The Mallis Book, on insect reference guide, can be found in your local library reference section.
Contact Pestmasters at 285-1191