Effective agents have been freely shared among countries for the last century.

Current practice for using biological control genetic resources:

Importation/classical biological control (public good)

Introduction of natural enemies from area of origin to areas invaded by non-native problem species (establishing natural enemy)
Establish self-sustaining natural enemy population (long term)
Investment by user country (exploration, risk assessment, mass rearing), good agent is freely shared with others with the same invasive species problem

Augmentative biological control (industry)

Mass release of living natural enemies in confined environments invaded by non-native and native problem species
Temporary presence in the environment (short term)
Investment by private companies (sold as commercial products), once a biocontrol agent has proven to be effective it can be introduced wherever the problem species occurs

Conservation biological control (public good)

Preservation of natural enemy community by habitat modification (medium/long term)
Investment by local community

We suggest that biological control be considered as a public good activity that benefits the global community