Homemade fly/wasp/yellow jacket trap. I made several of these last summer around the chicken area. Worked very well. Simply throw away when full. Avoid sweet bait if you don't want to accidentally trap honey bees. Meat will get more wasps and yellow jackets, rotten stuff will get hornets and flies.
Bee safe wasp trap. How to make your own wasp trap for free
Safe wasp trap. A mixture of vinegar, sugar and salt. The wasps are attracted to the sweet and sour scent yet bees don’t seem to be attracted by this sour mixture whereas a honey mix would be a fatal attractant.