As someone who frequently battles deer flies, I was thrilled to discover a unique and effective solution: the blue cup hat. When I first saw the hat covered in dead deer flies, I couldn’t help but admire its strange yet satisfying appearance. It may look unconventional, but this hat promises to be an inexpensive and practical way to protect myself from painful deer fly bites. With a regular ball cap and a blue solo cup attached using threads, I’ve transformed an ordinary accessory into a powerful insect trap.