Is it better to put a hot or cold compress on a swollen wasp sting?
A person stung by a wasp should first remove the stinger from the skin to prevent the spread of venom. Using a pair of tweezers is an effective way to do this, claims Mayo Clinic. Individuals can then proceed to clean the area of the sting with soap and water. If the site of the sting swells, the application of a cold compress to the skin can soothe the area and reduce pain.