What is the main purpose of buying mosquito killer in real estate?

Eliminate pests. Mosquito repellent is composed of DEET, abbreviated as DEET, which is a widely used insecticide. Mosquito repellent is mainly used to kill mosquitoes, flies, cockroaches and other pests. DEET was invented by the U.S. Army during World War II. It was used by the military in 1946 and put into civilian use in 1957. It was initially used on farms as an insecticide, and later the U.S. government applied for its use during wartime.