There’s an unlimited supply of house flies and other filth flies in the outdoor environment. The first step is to minimize attraction to the building, and the second step is to eliminate breeding sites near the structure. The dumpster and its surrounding pad are typically a key focus area. Consider the following:
- Microbial cleaners typically have no impervious surface restrictions. They can be foamed or sprayed over these areas to eliminate organic odors attractive to flies, and to digest the accumulated gunk that supports breeding.
- Boric acid powder can be applied in the bottom of dumpsters to prevent breeding there.
- Essential oil-based pesticides often feature true (and strong) repellency; they typically have no imperious surface restrictions, so they can be sprayed liberally on these outdoor areas to repel flies.
- If fly baits are used, they should not be used in the same area as repellent sprays, but they can be selectively deployed in areas away from the structure.
- Exclusion is another important focus, as once flies enter the structure, the battle is lost.