What Happens If Cluster Fly Infestations Are Left Untreated?

Weather and seasonal changes significantly affect cluster fly activity. They are most active in late summer and early fall when they seek shelter for overwintering. Warm, sunny days during winter can also stimulate activity within buildings. Understanding these patterns helps in timing prevention and control efforts effectively.

Cluster flies are not harmful to humans or pets. They do not bite, spread diseases, or infest food supplies. However, their presence in large numbers can be distressing, and their droppings may stain fabrics and surfaces. While not a health hazard, their infestation can impact the comfort and aesthetic of a property.

If you find cluster flies in your house during winter, they are likely already overwintering within your home. You can use a vacuum cleaner to remove visible flies. It’s also a good idea to inspect your home for potential entry points and seal them. Sometimes, especially if the infestation is large, you may want to contact Birch Fumigators for a more comprehensive treatment. Additionally, using light traps in areas like attics or basements can help manage the population until the weather warms up and the flies naturally leave the building.

Natural remedies, such as essential oils (e.g., eucalyptus, lavender, or peppermint oil), can act as deterrents but are usually less effective than professional treatments. Light traps and sticky traps can also be used to capture flies. However, for large infestations, these methods may not be sufficient, and professional intervention might be necessary.

Cluster flies typically enter buildings through small openings around windows, doors, siding, eaves, and roof vents. Sealing these entry points is essential in preventing infestations. This can be done using caulk, weatherstripping, or screens. Paying particular attention to south and west-facing walls, where flies are most likely to enter, effectively sealing off entry points.

Cluster flies can affect businesses by creating an unpleasant environment for customers and employees, especially in sectors like hospitality and retail. Preventive measures such as sealing entry points, maintaining cleanliness, and proactive treatments are essential. Regular inspections and timely interventions can minimize the impact on business operations.