Yellow jackets are generally more aggressive than ... Most people aren’t allergic to wasp or bee stings but may still develop ...

Yellow jackets are social wasps that live in colonies ... in which case they might sting you out of fear,” says Mizejewski. “An open can of soda, a bowl of fruit salad, or even the ketchup ...

Their stings are painful, but the wasps are usually not aggressive except when disturbed at the nest. German wasps (Vespula germanica) are very similar in appearance to the yellow-jacket ...