Insect repellents are substance applied to skin, clothing, or other surfaces, which discourages insects from landing or climbing on that surface. Insect repellents help prevent and control the outbreak of insect-borne diseases such as malaria, lyme disease, dengue fever, bubonic plague, and west nile fever.

Insecticides are specifically used to kill or control the growth of insects. It is a pesticide used against insects in all developmental forms. They include ovicides and larvicides used against the eggs and larvae of insects. Insecticides are used in medicine applications.

Insertion kit provides an easy and reliable method to randomly insert a transposon containing a phage T7 RNA polymerase promoter into any DNA molecule in vitro.

The Insole is the interior bottom of a shoe, which sits directly beneath the foot. Many shoes have removable and replaceable insoles and extra insoles are often added for comfort or health reasons to control the shape, moisture or smell of the shoe.