Bee safe wasp trap. How to make your own wasp trap for free
Add 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. The down-side of this wasp trap is it also attracts and traps beneficial insects such as lacewing and hoverflies which are a natural pest control of aphids, so watch timing and usage spaces.