Pest Facts: Merchant Grain Beetles


Merchant grain beetles are typically not found in grain products, but instead like to attack cereals, cake mixes, macaroni, cookies and chocolate. Merchant grain beetles are dark brown and have six saw-like teeth on each side of their bodies. They can grow to be one-eighth of an inch long and have very flat bodies.

Pest Facts
Color: Brown
Legs: Six
Shape: Narrow oval
Size: 1/10 inches
Antennae: Yes
Flying: Can fly and drawn to light
Region: All 50 States


The merchant grain beetle's body shape allows it to crawl into packaging to eat, live and place eggs.


Merchant grain beetles are found in pantries or in food processing areas or warehouses.


Merchant grain beetles can infest stored food products and can contaminate food.


Discard infested packages. Clean spilled grain and food sources.

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