An insecticide is a pesticide used against insects. They include ovicides and larvicides used against the eggs and larvae of insects respectively. Insecticides are used in agriculture, medicine, industry and the household. The use of insecticides is believed to be one of the major factors behind the increase in agricultural productivity in the 20th century. Nearly all insecticides have the potential to significantly alter ecosystems; many are toxic to humans; and others are concentrated in the food chain.^{[citation needed]}

The classification of insecticides is done in several different ways:^{[citation needed]}

The insecticidal properties of the best known representative of this class of insecticides, DDT, was made by the Swiss Scientist Paul Müller. For this discovery, he was awarded the Nobel Prize for Physiology or Medicine in 1948. DDT was introduced on the market in 1944. With the rise of the modern chemical industry, it was possible to make chlorinated hydrocarbons. DDT works by opening the sodium channels in the nerve cells of the insect.

Antoine Christophe Agbepa Mumba, also known as Koffi Olomide (Friday, August 13, 1956), is a DR Congolese soukous singer, dancer, producer, and composer. He is also known by a multitude of other names and aliases.

He was born in Kisangani, in the Democratic Republic of Congo. His father is Congolese (Gbandi tribe from Equateur region) and his mother was born from a Sierra-Leone father and a Congolese mother (Songye tribe from Kasaï region). According to the ethnic custom of his Sierra-Leone grand father, his mother named him 'Koffi' because he was born on a Friday . Koffi grew up in the city of Kinshasa, the capital of the Democratic Republic of the Congo, in a middle-class family, where education was valued.

He was a very bright student. He earned a scholarship and went to study in Bordeaux, France where he obtained a Bachelors Degree in Business Economics. He is also reported to hold a Masters Degree in Mathematics from the University of Paris.

Francis John (Frank) Tovey, also by his stage name as Fad Gadget (8 September 1956 – 3 April 2002), was a British avant-garde electronic musician and vocalist. He was a proponent of both New Wave and early Industrial music.

As Fad Gadget, his music was characterized by a use of synthesizers in conjunction with sounds of found objects, including drills and electric razors. His bleak, sarcastic, and darkly humorous lyrics, often layered in meaning and discussing subjects such as machinery, building construction, human sexuality, and physical violence, were sung in a droning, often expressionless voice.