The grain weevil is a small insect that primarily infests stored grains, such as wheat, corn, and rice. These pests are about 2 to 5 millimeters long and have a distinctive elongated snout. They lay their eggs inside the grains, and when the larvae hatch, they feed on the grain, causing significant damage to food supplies. Grain weevils are often found in homes, warehouses, and farms where grains are stored. Effective control methods include proper storage practices, such as using airtight containers, and regular inspections to detect and eliminate infestations before they spread.