Flies & gnats
Cluster flies: identification & cluster fly control
Cluster flies overwinter inside walls and attics and reappear on warm days. Control is a timed exterior barrier treatment in late summer plus sealing of siding, soffit and window gaps.
How to identify cluster flies
- What it looks like
- Slightly larger than house flies, dark gray with golden hairs on the thorax and overlapping wings at rest.
- Size
- 3/8 inch
- Where you'll find it
- Attics, wall voids, window frames and sunny south-facing walls in fall.
- Commonly confused with
- House flies are faster and present year-round near food.
Signs of cluster flies in your home
- Sluggish flies at windows on warm winter days
- Piles of dead flies in the attic
- Clusters on sunny exterior walls in fall
Cluster flies questions homeowners ask
Why do flies appear in my house in winter?
Cluster flies overwintering in wall voids wake up on warm days and move toward light indoors.
Cluster fly control by city
Local technicians handle cluster flies in every market below — pick your city for neighborhood coverage, seasonal notes and a free quote.
Cluster fly control in Austin, TXCluster fly control in Boise, IDCluster fly control in Charlotte, NCCluster fly control in Charlotte, NCCluster fly control in Colorado Springs, COCluster fly control in Columbus, OHCluster fly control in Columbus, OHCluster fly control in Greensboro, NCCluster fly control in Indianapolis, INCluster fly control in Jacksonville, FLCluster fly control in Kansas City, MOCluster fly control in Louisville, KYCluster fly control in Memphis, TNCluster fly control in Miami, FLCluster fly control in Nashville, TNCluster fly control in Oklahoma City, OKCluster fly control in Omaha, NECluster fly control in Phoenix, AZCluster fly control in Raleigh, NCCluster fly control in Richmond, VACluster fly control in San Antonio, TXCluster fly control in Tulsa, OK