1. to rid (a place) of rats, especially by poisoning or trapping
Usage: transitive verb; chiefly British

Examples

• The city hired professionals to derat the old warehouse.
• They decided to derat the grain storage facility before winter.
• The building was deratted after an infestation was discovered.
• Local authorities deratted the subway tunnels to control the rodent population.
• Farmers often derat their barns to protect stored crops.