If wasps and other pests make unpleasant appearances at your backyard events, this pesticide-free trap will take care of them for you without the risk getting stung. All you need is a few household items.
Instructables user thebeatonpath built this wasp trap with a little red wine (we imagine a sugary drink would work just as well), some dishwashing liquid and an empty plastic bottle. Cut off the upper third of the bottle, flip it over so it fits back into the bottle like a funnel, pour some wine in the bottom of the bottle, add the dishwashing liquid to break the surface tension, and seal up the sides so the wasps can't get out. The results speak for themselves in the video above.
DIY Yellow Jacket Bottle Trap [Instructables]