Weevils and Pantry Pests in Tennessee | Pest ID Guide
Weevils and Pantry Pests: Quick Facts
Weevils are small beetles with a long snout. The ones that matter indoors develop inside whole grains like rice, corn, and wheat, often before you ever bring the package home. They’re part of a larger group of pantry pests that includes flour beetles, cigarette beetles, and pantry moths.- Size: About 1/8 inch for grain weevils
- Look: Reddish-brown to black, with a distinct snout
- Where found: Rice, whole grains, popcorn, corn, dried beans, and birdseed
- How they spread: Usually arrive in infested packages, then spread to other dry goods
- Harmful?: They don’t bite or spread disease, but infested food should be thrown out
Common Weevils and Pantry Pests
Rice, Granary, and Maize Weevils
Females chew into whole kernels and lay an egg inside. The larva develops hidden in the grain, and the adult chews its way out, leaving a small hole. Rice weevils and maize weevils can fly; granary weevils can’t.
Bean Weevils
Small, oval beetles that develop inside dried beans and peas, leaving round holes.
Flour Beetles and Grain Beetles
Tiny, slender, reddish-brown beetles without a snout. They feed on flour, cereal, and processed grain products rather than whole kernels.
Other Pantry Pests
Cigarette and drugstore beetles infest spices and pet food, and Indian meal moths leave webbing in grains and nuts. See our cigarette beetle guide and moth guide.
Outdoor Weevils That Wander In
Some weevils, such as root weevils, live outdoors on plants and wander into homes in summer and fall, especially during hot, dry weather. They’re harmless, don’t infest food, and can simply be vacuumed up. Sealing gaps around doors and windows keeps them out.
Signs of Weevils and Pantry Pests
- Insects in food: Small beetles in rice, grains, flour, or beans
- Holes in kernels: Tiny round exit holes in rice, corn, or beans
- Beetles on shelves: Crawling on pantry shelves or near windows
- Clumping or webbing: In flour and cereal (beetles) or grains and nuts (moths)
How to Clean Out a Pantry
- Check everything: Rice, grains, flour, pasta, cereal, beans, spices, nuts, dried fruit, pet food, and birdseed.
- Throw out infested food: Seal it in a bag and take it outside.
- Vacuum and wipe: Vacuum shelves and cracks, then wipe with soapy water.
- Store food sealed: Use airtight glass, metal, or thick plastic containers.
- Freeze new grains: Several days in the freezer kills hidden eggs and larvae.
- Buy smaller amounts: Use grains within a few months so infestations can’t build.
When to Call a Professional
If pantry pests keep returning after a cleanout, the source may be hidden: behind appliances, in wall voids, or in an overlooked product. Schedule a free inspection, or see our quarterly pest control.
Frequently Asked Questions
What are the tiny bugs in my rice?
They’re likely rice weevils, which develop inside whole grains and chew their way out as adults.
Are weevils harmful to eat?
They don’t spread disease, but infested food should be thrown out.
How did weevils get in my pantry?
Usually in an infested package from the store. From there they spread to other dry goods.
How do I get rid of weevils?
Throw out infested food, vacuum and wipe shelves, store food in airtight containers, and freeze new grains for several days.
Why are there weevils in my house that aren’t in food?
Some outdoor weevils wander inside in summer and fall. They’re harmless and don’t infest food.
