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The tiny grain beetles are members of a family of beetles that often are found under the loose bark of logs, where they are predators on other, smaller arthropods. The grain beetles sometimes are placed into a separate family called the Silvanidae, or “flat grain beetles”. These are all extremely flattened, narrow beetles which are capable of entering packages of food through the smallest of openings. They will feed on the wide range of vegetable-based food products, including rodent baits, but are not capable of attacking whole, unprocessed grains that are in good condition. The insects are relatively inactive in cool weather, and begin egg laying in the spring, the female laying up to 285 eggs. The period from egg to adult varies, but under optimal conditions of warmth and humidity it can be completed in about 1 month. The adult of this species is able to fly.
Good stock rotation and proper storage of food products in cool, dry conditions will inhibit the ability of this beetle to breed quickly. Cleanup of spilled material and debris in general also reduces the attraction of a structure, and proper maintenance of rodent baits, or the use only of paraffin block baits, eliminates this source as food for the beetles.