The most widely-known technique of applied biological control is importation (inoculative release). Importation's goal is to establish exotic natural enemies, especially parasitoids (frequently called classical biological control). However, in rice insect pest control, success has been achieved with reliance on the endemic and plentiful parasite, parasitoid, and predator populations occurring naturally in the rice fields.

At this point, more research is needed to assess the pest control potential of known natural enemies against black bugs and to find biocontrol agents that are suitable for importation.

Importation involves bringing in potential natural enemies from another country with similar ecological conditions. The natural enemies are either carried in personally or sent by airfreight.