The best way to avoid a wasp sting to is avoid both wasps and their nests. Wasps will usually only sting when their nest is disturbed, but some wasps will also sting if they are swatted at or feel threatened. Take extra care while eating and drinking outdoors because it is common for wasps to climb into pop cans and sting. If a sting does occur, the symptoms are usually short lasting. The initial burn of the sting usually fades to tenderness and swelling. However, wasp stings can be extremely dangerous for those allergic to them. If at any time you feel that the sting is serious, seek medical help as soon as possible.