Wasps can be helpful little creatures- they’re to thank in part for keeping the pest population in check- but they can also be quite the nuisance. Picnics and other outdoor summer activities are a bit difficult to enjoy when wasps are swarming overhead, so try to keep things under control with a DIY wasp trap. 2-liter soda bottle Honey or sugar water Utility knife Stapler or clothespins 1.