Pesticide

A toxic chemical product that kills harmful organisms (e.g., insecticides, fungicide, weedicides, rodenticides, acaricides).

Source: FAO Glossary of biotechnology & genetic engineering 

An acaricide is any chemical, agent or material toxic to mites, ticks and spiders (Acarnia) as distinct from insects.

Source: Integrated Pest Management Resource Centre, Glossary of Terms 

Biocide(s) - Herbicide - Insecticide

GreenFacts Summary on Effects of Biocides on antibiotic resistance

Español: Pesticida
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PCBs

Genetically Modified Crops

Water Resources

Agriculture

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