another thing to note is that many winged stingers, PARTICULARLY yellowjackets, are much more aggressive in late summer or early fall. They're getting ready for winter, and are frantically storing up reserves in the form of any type of sugars they can find -- fallen fruit, some types of flowers, SODA CANS... be VERY careful. The little varmints fly into the cans to get the sugary soda, and can easily be swallowed, causing painful mouth or throat stings, and for those who are particularlly sensitive to the venom, maybe even death. It's a good idea to NOT drink soda directly from a can in late summer. Use a cup, a bottle, or keep a lid or cover of some kind over the can.