Agricultural inspectors determine if farmers and food processors are using safe methods to care for livestock and to process food.

Agricultural inspectors keep food out of stores that was handled or grown improperly. They inspect farm livestock, before and after slaughter, to find out if they have diseases. They examine food-processing plants to see if they meet federal regulations. They make sure the plants are sanitary. They check that the prices and weights are accurate. Inspectors test crops for diseases, chemical residue, and various conditions. They test eggs, meat, and seafood to find out if they are safe to eat.

Inspectors also grade, or judge, products. Typically, higher grades mean higher quality. They issue certificates that specify the grade the product received.

Sometimes inspectors have to close plants or production facilities if safety is in question. This usually happens when a food product is recalled. Inspectors help identify the problem so that people don't get hurt or sick from eating the food.