What Scent Keeps Horseflies Away? Horseflies are painful pests that feed on the blood of all mammals, including humans. The flies trace and find their prey by targeting the prey's appearance, movement and smell. Most fly control methods target the horsefly's olfactory senses.
CFCs. Chlorofluorocarbon (CFC) is an organic compound that contains carbon, chlorine, and fluorine, produced as a volatile derivative of methane and ethane. A common subclass is the hydrochlorofluorocarbons (HCFCs), which contain hydrogen, as well.
Chlorofluorocarbons (CFCs) are highly stable compounds that were used as propellents in spray cans and in refrigeration units. They are several organic compounds composed of carbon, fluorine, chlorine, and hydrogen. CFCs are manufactured under the trade name Freon .