Pests and pesticides Pest: ANY UNWANTED organism that directly or indirectly interfere human activity is called a pest. o Pesticides or biocides are substances that can kill organisms that we consider to be undesirable The most widely used types of pesticides Insecticides Herbicides Fungicides RodenticidesPests and pesticides • Pest: ANY UNWANTED organism that directly or indirectly interfere human activity is called a pest. • Pesticides, or biocides, are substances that can kill organisms that we consider to be undesirable. • The most widely used types of pesticides: – Insecticides – Herbicides – Fungicides – Rodenticides