buy 36.6% permetherin, mix it 1.5 oz to the gallon of water, they may buzz you but if they land on you they won't live long enough to bite, be very careful with it around honeybees, extremely toxic to bees of any kind. its extremely good for those houses that set in the sun that attract hordes of ladybugs and stinkbugs, also excellent for spider control in crawl spaces and basements.
RR