Insect bites and stings Insect bites and stings Insect bites and stings occur when an insect is agitated and seeks to defend itself through its natural defense mechanisms, or when an insect seeks to feed off the bitten person. Some insects inject formic acid, which can cause an immediate skin reaction often resulting in redness and swelling in the injured area. Stings from fire ants, bees, wasps and hornets are usually painful, and may stimulate a dangerous allergic reaction called anaphylaxis for at-risk patients, and some wasps can also have a powerful bite along with a sting. Bites from mosquitoes and fleas are more
RID Insect Repellent against mosquitoes, biting flies, chiggers, fleas and ticks. These insect repellents slowly evaporate into the air, producing an invisible chemical barrier around the areas on the body and clothes where it is applied, repelling incoming insects.<ref name="Repellents/AMCA"></ref> RID was invented in 1956, after 3,000 hours of field research by inventor Doug H. Thorley. A bottle of RID is exhibited at the Queensland Museum in Australia. RID insect repellents are used to repel insects which may carry a number of diseases, including; Ross River Virus, Dengue Fever, West Nile Virus, Malaria, Yellow Fever, Japanese B Encephalitis, Filariasis, Lyme Disease, Leishmaniasis, Typhus