Growers can make this wasp trap by cutting off the top of a plastic liter soda bottle, inverting the top, and placing it back in the bottle. Add a teaspoon of liquid detergent to the bait mix to make it hard for wasps to fly. A lack of commercially available lures that attract wasps with the promise of food makes building your own wasp trap a popular option for many growers. A knowledge of the chemical ecology of pests is beneficial when trying to develop an effective trap, Dr. Peter Landolt of the U.S. Department of Agriculture in Yakima, Washington, […]