There are several types of chemical agents used for disease control, including: 1. Disinfectants: Chemicals used to destroy or inhibit the growth of harmful microorganisms on surfaces. 2. Insecticides: Chemicals used to kill or repel insects that may transmit diseases. 3. Antimicrobials: Agents that kill or inhibit the growth of microorganisms such as bacteria, fungi, or viruses. 4. Herbicides: Used to control unwanted vegetation that may harbor disease vectors.