Abstract: A modular trapping system that functions in a holding or a terminating mode on dry land, adjacent water or in water. The system comprises several interchangeable, user selectable components that may be conveniently assembled into a desired trap configuration in a minimal time period. The primary components are a cylindrical body with a tapered end, an entrance, and a terminus. In the preferred embodiments, the entrance and terminus may be threadably secured to the body. The entrance components generally comprise a hollow elongated tubular frame supporting a door controlled by a conventional actuating mechanism. The terminus components comprise a hollow elongated tubular frame with a transparent end wall. Several optional inserts may be placed inside the body to enhance the trap. An optional stand may also be used to place the trap adjacent or in bodies of water. The configured trap may be deployed in either a holding or extermination mode.