What should you do if a yellow jacket gets in your house?

NOTE : If the person stung experiences swelling (away from the sting site), fever, headache, nausea, or dizziness, or has any history of allergic reactions to stings, immediately seek professional medical care.

A yellowjacket or hornet sting may or may not leave a stinger in the skin. This should be removed, but carefully to avoid squeezing out more toxins. Ice may be used to reduce swelling and pain (wrapped in cloth to avoid skin damage). First aid creams may include a topical antihistamine, to reduce swelling, or hydrocortisone to relieve itching. A loose bandage should allow drainage from the wound.

There are commercial "sting kill" swabs which may provide effective relief for some stings. Some home remedies that have helped in stings include wet tea bags (an astringent), or wet baking soda, or even wet mud (which may to a limited extent draw fluid from the wound).