Prevention is the best way for homeowners to get rid of grain beetles. A flashlight can be used to examine locations where food is stored. Food products that have been infested by grain beetles should be thrown out immediately. Many people forget to examine food immediately after purchase, and in some cases, grain beetles have already penetrated a product before homeowners get a chance to take it home. It's not a good idea to use insecticides to get rid of grain beetles because of potential food contamination. Insecticides should always be supplementary to proper storage and sanitation.