Apps claiming to repel mosquitoes don't actually work, despite the promises. We've been hearing that for years about devices, and now the same thing applies to apps.

We've been sold devices that supposedly emit sound to ward off mosquitoes, but they haven't worked for decades. Now, instead of a physical device, you can try an app. Unfortunately, the outcome remains the same: it doesn't work.

“It’s just a fantasy. There’s no proof that sound-emitting devices can prevent mosquito bites,” writes mosquito expert Cameron Webb for The Conversation.

Despite scientific skepticism, both the iTunes and Google Play app stores feature numerous mosquito repellent apps. Some claim effectiveness, while others add disclaimers like: “This app has not been scientifically proven to repel mosquitoes. Treat it as a joke app.” Another one adds, “Use it to prank your friends with the sound :)”

To effectively ward off mosquitoes, try using a fan. The airflow makes it difficult for mosquitoes to detect your scent from your breath. For added protection, use a bug spray that includes active ingredients such as DEET, picaridin, or oil of lemon eucalyptus. These ingredients—unlike apps that use sonic repellents—actually get the job done.