Where to place bait traps?

Btw, these traps are professionally homemade as I had my mother make these for me for less than 2$ a piece. Then I learned to use the sewing machine and have been making my own traps ever since. They are truly a must have tool when collecting and I used a very fine mesh that results in minimum damage to the wings. They were very small and I had a separate backpack for my traps and s draw string bag for the bottom plates。I also carried with me a 5liter big jug that I would ferment my bait in, most of the time I could find my bait when walking to check on my traps as there were fruit trees all around, and the local farmer would always place the bad oranges in a pile anticipating that I’d use them for bait.i also carried a large heavy knive, slingshot, roll of fishing line and nylon line, fishing weights and disposable gloves. These traps could run for about 2 years (when housed in the shade) before starting to fall apart, then one needed to simply repair it. Of course I would remove the traps during the peak fruit beetle peak as they could destroy any trap.