Masontops Plastic Regular Mouth Trap Cap Mason Jar Lid (4-Count)

The Trap Cap goes virtually unnoticed as it catches fruit flies and works in any environment - homes, businesses, camp grounds and more. Simply add attractant (apple cider vinegar or other) to a regular mouth Mason jar, screw on the Trap Cap lid, and flies will instantly be drawn in, but cannot escape. 5-hole design lets flies in but prevents them from exiting. Reusable and dishwasher safe plastic.