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To keep animals out, you must prevent them from entering. As long as they can get in, the problem will persist. That said, consider making your attic less inviting using deterrents like motion-activated lights or ultrasonic devices. Additionally, keeping a well-maintained, clean, and uncluttered attic that you regularly inspect for activity may make the space less attractive to critters.

Some believe that essential oils, like peppermint, may work the way that roach-repellent foods do: the roaches do not like the smell that the oil is producing and so they stay away. While essential oils can deter roaches from surfaces, they do not fight an infestation. Use essential oils as a prevention method, not a removal method.

You’ll find that phorid fly larvae breed in moist, decaying, organic matter. When trying to locate a breeding site, thoroughly inspect the following places in your home: drain pipes, trash cans, garbage disposal, pet waste, rotting produce, plants, compost bins, and even under appliances like the stove and refrigerator where moist food may have dropped. It’s also possible for a breeding site to form inside of a wall, crawl space, or under your home’s foundation.

We recommend using diatomaceous earth to create roach repellent barriers outdoors. Most oil and spray applications will quickly wear down in outside weather, so they aren’t as much use  in the outdoors. If you are really struggling with an outdoor roach problem, we suggest looking for pet-safe bait traps you can set.