Weevils are pests known to get into foods, especially grains and corns. They lay their eggs and take over cupboards and food areas. Weevils not only are disgusting but also contaminate food, thus forcing you to throw it out. Yet if weevils have infested your cupboards or cracked corn, you can take steps to eradicate them. The key is to catch them as early as possible to salvage as much of the food as you can.
Locate the infested area. If the food that contains the weevils is in your pantry or cupboards, go through every edible product in there, as the weevils could have spread. Wear gloves at all times, and throw out everything that the weevils have gotten into. If they are in your entire package of cracked corn, throw it out. If you are ousting weevils from your grain bins, clear all the infested corn, and then thoroughly scrub down every surface of the bins.
Spray the area or bins with a pyrethrin, which is an organic insecticide. Avoid using any pesticides, because you, too, will be eating the food stored here. Stick with a pyrethrin, such as CB-80 Extra, Konk Too or Riptide Waterbased Pyrethrin ULV, that can be purchased at a garden or home supply shop. Spray the cupboards, but don't spray any food directly.
Air out the area that you sprayed for at least a couple of hours before replacing any food or corn.
Keep the area dry and aired out. Corn should never have a moisture level higher than 15 percent at any time. Avoid having too many cracked corn kernels in your bins, as they are usually more disposed to weevil infestation. If your corn is getting too moist, allow proper ventilation.