Question: How to make a homemade wasp trap?
Option 0: Cut the top off a plastic soda bottle, invert the top over the bottom, place salty liquid or lye in the bottom.  It will trap the wasps.
Option 1: Cut the top off a plastic soda bottle, invert the top over the bottom, place sugary liquid or non diet soda in the bottom.  It will trap the wasps.
Answer: 1