The answer to 'are wasp dangerous' is yes, wasps can be dangerous. Wasps are aggressive insects that can sting multiple times, and their stings can be painful and cause swelling, redness, and itching. In some people, wasp stings can also trigger severe allergic reactions, which can be life-threatening.
Wasps are more likely to sting when their nests are threatened or disturbed. They are also known to be more aggressive during the late summer and early fall when their colonies are larger and they are trying to protect their food sources. It's important to be cautious around wasp nests and to call a professional pest control technician if you suspect a wasp infestation on your property.