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) â used as a blowing agent to make the material foam. Pollution regulations (the Montreal Protocol) have largely restricted this and other toxic halogens in the US since the 1990s. Manufacturers can use other gases or pressurized foaming systems instead.