- biological pest control is the introduction of a species to control a pest
- chemicals can also be used to control a pest
- the advantages are that the pest is controlled without using pesticides
- the disadvantages are that are that some non-targeted species may die
- it can be costly and disrupt the native food chain
- an example of a failure is the cane toads in australia
- cats have been used to control rodent population but it increased the cat population and destroyed the native bird population
- parasitic nematodes are good to control garden pests
- sterilization and release of male members of a pest species