The term sheep dip refers to a solution of insecticide and fungicide which shepherds may use to protect their sheep from infestation. The term is used both for the solution itself, and the trough in which the sheep is dipped.

The worlds first Sheep Dip was invented and produced by Mr George Wilson of Coldstream, Scotland in 1830.That Dip was based on Arsenic powder and was exported by Package Steamer from nearby Berwick Upon Tweed.

The term is also used colloquially in business to refer to the process of training all employees in an organization in a general subject of wide applicability.

The term is also used in Information Security. It is a computer that is isolated from a business core network used to screen incoming digital devices. They will often contain multiple malware scanners and egress packet detection.