9. Sometimes no matter how hard you try, it is just impossible to trace an underground nest, then toxic bait stations may come in handy to reduce some of the hostile population. But keep in mind, that you must present the bait to yellowjackets in a safe way so that you don’t pose danger to other animals. Here we want to describe the following safe method.
You need make a five-inch square box from ½ inch mesh wire screening; one side has to be hinged so that bait can be put in, and you will have to suspend it from a branch by a wire. You want to make the box and hang it so that other animals cannot enter or destroy it. The suspended wire must be coated with Tanglefoot or Stikem to keep out crawling insects.
10. To prepare the bate use fish-flavored cat food or canned tuna fish mixed with chlordane wettable powder to make a 1% mixture and place it in a shallow pan on the bottom of the cage. So, this is how it works – adult yellowjackets pass through the screening, pick up the meat and carry it back to feed their young, so gradually poisoning the whole colony.
In general, no control is required for the solitary, ground-nesting wasps and bees, but if the necessity does arise, the same insecticides as listed for yellowjackets may be used.