Are drugstore beetles dangerous?

Updated on: 20 October 2026

Quick overview

• Drugstore beetles are small pests damaging stored food and materials.
• Larvae cause major economic damage by contaminating products.
• These pests do not bite, sting, or transmit diseases.
• Infestations spread via shipped goods in warm environments.
• Managing infestations requires early inspection and professional treatment.
   

Pests in a kitchen, pantry, or processing area are bad for business. They leave chew marks, contaminate surfaces, or damage food to the point that it becomes unsellable.

One of the most common offenders is the drugstore beetle, sometimes called the bread beetle or biscuit beetle. It’s thought these beetles got their name because of their fondness for eating herbs and plants that were often used to make drugs. So, are drugstore beetles harmful? Here's what you need to know.

What are drugstore beetles?

Drugstore beetles are small, reddish-brown pantry pests known for their ability to feed on an unusually wide range of household and stored items. They attack a surprising range of goods, from flour, bread, and spices to sweets, wool, and leather. Because they'll feed on non-food materials too, they've become a known problem for museums and collections housing old books, textiles, and other organic artifacts. These beetles turn up worldwide, but they favor warm climates and heated buildings.

Most drugstore beetle problems start with infested goods shipped in from somewhere else. Bulk products like seeds, grains, or dry pet food are common carriers. Warehouses and businesses handling bulk stock are particularly exposed to this kind of hidden infestation.

Why are drugstore beetles a concern?

The larvae are the real problem. As they chew through food, herbs, and stored plant material, they leave holes and damage that render products unusable. The FDA allows for 75 fragments per 50 grams before a product is considered adulterated, according to the FDA's Food Defect Levels Handbook. That gives you a sense of why even a modest drugstore beetle infestation can put a batch of product at risk.

What do drugstore beetles eat?

Beyond flour, bread, and spices, drugstore beetles happily feed on cereal, pasta, pet food, dried herbs, and even less obvious items like book bindings, wool, and dried flowers. This wide diet is part of what makes them so hard to keep out of a food processing or storage facility.

Do drugstore beetles bite?

Drugstore beetles don't bite, sting, or spread disease to people. Their mouthparts are built for chewing through dry goods, not skin, so any unexplained irritation is worth mentioning to a healthcare professional to rule out other causes, but it won't be down to these beetles.

Do drugstore beetles transmit disease?

Drugstore beetles have not been found to be the vector for any known disease. The main reason the drugstore beetle is considered an unwanted pest is due to the problems they cause for businesses and homeowners. Because a female drugstore beetle can lay more than 100 eggs at a time, they can make entire batches of food and business product unsalable. The real cost shows up in ruined stock and failed quality checks. For businesses, this can mean product recalls or complications with food safety compliance.

How do you get rid of drugstore beetles?

Once a drugstore beetle infestation takes hold, numbers grow quickly, so it pays to catch it early. Inspect stored products for tiny holes in packaging, even in items as ordinary as a box of baking soda at the back of a cabinet. Infested product usually needs to go, though bulk goods can sometimes be treated using specialized treatments. However, only highly trained experts should do this kind of product fumigation.

Prevention counts too: keep floors clean and check cracks and cabinet corners where crumbs collect. Mice and drugstore beetles can work in tandem: mice stash food, beetles feed on what's left. If you're seeing rodent activity, it's worth checking for both.

A proper drugstore beetle treatment typically requires specialized equipment and should be handled only by trained technicians. If you're dealing with an infestation at home or at work, get in touch. We'll inspect the property, pinpoint the source, and help get things back under control.