Which method is classified under mechanical pest control?

Mechanical pest control involves methods that physically remove or eliminate pests without the use of chemical substances. The correct choice refers specifically to using light traps and insect electrocuters. These are devices designed to attract and kill insects through physical means—either by drawing them into a trap or by electrocution—thereby reducing the pest population without relying on pesticides or chemical products.

Sanitation practices play a crucial role in pest control by removing food and breeding sites for pests, but they do not fit the definition of mechanical methods as they do not involve a physical device that directly interacts with pests. The use of pesticides is clearly a chemical method, targeting pests through toxic substances. Similarly, the application of bait also falls under chemical control methods, as it typically involves substances meant to poison or attract pests without the physical interaction characteristic of mechanical methods.

In summary, light traps and insect electrocuters exemplify mechanical pest control as they utilize physical mechanisms to manage pest populations effectively.