Tiny Brown Bugs in Flour and Cereals: Identification Guide

Different small brown bugs infest flour and cereals.

The short answer

Flour beetles are reddish-brown and flat, weevils have a snout, drugstore beetles are round and brown, and grain borers are cylindrical. Look at shape and size, discard infested items, clean and store airtight.

Look for

• Snout: weevils.
• Flat reddish-brown: flour beetles.
• Round with ridges: drugstore beetles.
• Cylindrical: grain borers.

Then

1. Discard infested stock.
2. Clean shelves.
3. Store airtight.

When to call a professional

If the problem is widespread, keeps returning or you are unsure what you are dealing with, a professional inspection will save time and avoid wasted effort.

Frequently asked questions

Does the species matter?

For advice, slightly.

Are all harmful?

They spoil food.

Do I need a lens?

Helps.

Can they fly?

Some can.

This guide is part of IPest's complete resource on pantry and fabric pest control. For identification help, prevention and treatment options, see our full pantry and fabric pest control guide for Bangalore.