Are they difficult to see?
I put a single tire on the beach and after a few hours, when I wasn't even looking for it, I saw a fly getting inside the tire as I was walking through the beach. Then I slowly walked to the tire and after a few seconds, the fly came out again and I caught it.I have had tin cans outside for 3 days now and I have seen a grand total of 0 flies. Has anyone caught one? How did you do it?