Plant & Pest Diagnostics

Grain weevils (Sitophilus spp.)

Grain weevils include three species of small weevils: The rice weevil, granary weevil and the maize weevil. They are common stored grain pests, which sometimes infest whole kernel grain foods in our pantries. The larvae or grubs develop inside of whole corn, wheat and rice kernels. The adult weevils emerge through tiny, round holes in the kernels. These holes are the evidence that a product is infested with grain weevils. The best method of controlling this pest is to locate the grain or food in which they are feeding and remove it. Check all opened packages of whole-kernel foods including birdseed for weevils or tiny holes in the kernels. Discard any found to be contaminated. Next, thoroughly scrub cupboards and kitchen area with strong detergent. Inspect behind and under appliances for spilled kernels, which can harbor these insects and remove up if found. Once the area is clean, any household insecticide containing pyrethrins (like Raid) can be applied, if you so desire.

Be sure to read and follow all the instructions and safety precautions found on the pesticide label before using any pesticide.