Trap now comes in an assortment of pink, green, purple or red. Cannot pick color. Small Wasp Trap. Simply fill the wasp trap with sweet liquid and the wasp will be immediately attracted to it, they crawl into the bottom of the bottle and become trapped, letting you eat lunch or supper on a wasp free table. The wasp trap can be hung from its hook also. Locate this wasp trap away from people and food, preferably at the edge of your yard.