A biocide is defined [in the European legislation] as a chemical substance or microorganism indended to destroy, deter, render harmless, or exert a controlling effect on any harmful organism by chemical or biological means (AMM/Wikipedia)

Biological control refers to a strategy making use of living natural enemies and competitors (i.e. self-replicating biotic entities) (Source: CBD Glossary of terms based on IPPC)

Alternative labels:
biological control