Esschert Design Fly Deterrent

This method relies on visual confusion rather than chemicals. When filled with water, the curved glass acts as a prism, creating light refractions that are disorienting to flies, encouraging them to avoid the immediate area.

You only need to fill the reservoir with plain water. No bait, attractants, or chemicals are required for the device to function.

It is best suited for areas where you want to discourage flies, such as near patio dining tables, doorways, or garden seating. Ensure you hang it in a spot where it can catch some natural light to maximize the refractive effect.

The glass is sturdy, but like any hanging decor, it should be secured properly using the included leather strap. While it handles standard outdoor breezes well, you may want to take it down during severe storms or high winds to prevent it from swinging and hitting nearby surfaces.

It is a good practice to refresh the water every few weeks or whenever it begins to look cloudy or accumulates debris. Keeping the water clear ensures the light refracts properly for the best deterrent effect.