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Controlling insects that attack food products
The cigarette beetle (Lasioderma serricorne) is a small, reddish-brown stored product pest that commonly infests stored food, dried goods, and tobacco products, which is why it’s also referred to as the tobacco beetle. Despite its name, this beetle doesn’t just target cigarettes; it feeds on a wide range of materials, from grains and spices to pet food and books.
Because of its ability to infest so many products, it’s one of the most widespread stored product pests found in homes, restaurants, and warehouses. If you’ve noticed small brown beetles flying around your kitchen or food storage areas, it’s important to act quickly. Cigarette beetles reproduce rapidly and can easily spread from one package or product to another.
What are cigarette beetles?
Cigarette beetles are small, oval-shaped insects known for their reddish-brown color and distinctive humped appearance. They are closely related to drugstore beetles but can be identified by their smoother wing covers and slightly different feeding habits. They thrive in warm, humid environments and are often found in pantries, grocery stores, tobacco warehouses, and museums: anywhere dry organic material is stored for long periods.
Key characteristics
Below are some cigarette beetle facts that can help you spot signs of an infestation:
- Adult beetles measure about 1/16 to 1/8 of an inch in length (about 1.5–3 mm).
- Oval-shaped and reddish-brown with smooth, shiny wing covers.
- The head is bent downward, giving the body a humped appearance.
- Antennae end in a small, three-segmented club.
- Larvae are cream-colored, C-shaped grubs with brown heads.
- Strong fliers
Cigarette beetles are often mistaken for drugstore beetles, but under magnification, cigarette beetles have serrated antennae and a more rounded profile.
Habitat, diet, life cycle, and behaviors
Cigarette beetles are common stored product pests found in temperate as well as tropical regions. They feed on a wide range of dried plant materials and can reproduce quickly under warm conditions.
Cigarette beetles are not directly harmful to humans. They do not bite, sting, or spread disease. However, they can contaminate food with droppings, shed skins, and dead insects, which may cause mild allergic reactions or stomach irritation if consumed.
Their presence in stored products is mainly a hygiene and contamination concern rather than a health threat.
Cigarette beetles are highly adaptable and will feed on nearly any dried organic material. Common food sources include:
- Tobacco products
- Dried herbs and spices
- Flour, cereals, pulses, and grains
- Nuts and dried fruit
- Pet food, pasta, and cocoa
- Dried flowers, paper, and even book bindings.
Female cigarette beetles lay 30–100 eggs on or near food products. After hatching, larvae burrow into materials such as tobacco, grains, or spices and feed for several weeks before pupating inside silken cocoons.
- Complete development typically takes one to two months.
- Adults live two to six weeks, and do not need to feed.
- Multiple generations can occur each year, especially in heated buildings.
- Infestations can persist year-round in warm indoor environments.
These beetles are nocturnal and prefer dark, undisturbed areas. Adults can fly and are attracted to light, which is why they’re often seen near windows or lamps.
Because of their varied diet and small size, cigarette beetles can quickly move through a storage area, contaminating multiple products before being noticed.
What are cigarette beetles?
Cigarette beetles are small, oval-shaped insects known for their reddish-brown color and distinctive humped appearance. They are closely related to drugstore beetles but can be identified by their smoother wing covers and slightly different feeding habits. They thrive in warm, humid environments and are often found in pantries, grocery stores, tobacco warehouses, and museums: anywhere dry organic material is stored for long periods.
Are cigarette beetles dangerous?
Cigarette beetles do not bite, sting, or spread disease, but they can cause significant indirect damage. Their larvae feed on dried goods, leaving behind contamination from droppings, shed skins, and fine powder. Infested food often develops a stale or musty odor and is no longer safe to eat.
Beyond food products, cigarette beetles can damage paper, packaging, and other organic materials such as books or dried flowers. In museums or archives, they may harm historical documents, botanical specimens, or stored fabrics.
Hidden larvae and eggs often remain in cracks, shelving, or packaging materials. In commercial environments, infestations can lead to costly product losses and reputation concerns if not managed quickly.
Cigarette beetle prevention tips
Preventing cigarette beetle infestations starts with proper storage and regular monitoring.
- Store dried goods in tightly sealed containers and keep storage areas clean and dry.
- Inspect incoming products for signs of damage or insect activity before placing them in storage.
- Rotate stock regularly to avoid long-term buildup of older goods, which are more likely to attract pests.
- Cracks, crevices, and hidden areas should be sealed and cleaned often to remove food particles and debris that can support beetle activity.
- Keeping storage spaces well-ventilated and minimizing humidity also helps discourage infestations.
Our pest experts can inspect storage areas, food-processing equipment, and environmental conditions to help protect your home or business from recurring pest problems.
Need help with stored product pest control?
Because cigarette beetles can hide deep within packaging, small crevices, and insulation, complete elimination is difficult without professional help. We locate the source of these beetles, treat affected areas, and recommend long-term prevention strategies tailored to your space. We offer both residential and commercial pest control services. Contact us today to arrange an inspection and quote.
Frequently asked questions
Cigarette beetles are not directly harmful to humans. They do not bite, sting, or spread disease. However, they can contaminate food with droppings, shed skins, and dead insects, which may cause mild allergic reactions or stomach irritation if consumed.
Their presence in stored products is mainly a hygiene and contamination concern rather than a health threat.
Cigarette beetles are attracted to a wide range of dried organic materials, including tobacco, flour, cereal, spices, dried fruit, nuts, and even paper products. Warm, dark, and humid storage areas give them the ideal conditions to reproduce and feed. Open packaging, long-term storage, and poor sanitation can all contribute to infestations.
Yes. Adult cigarette beetles can fly and are often seen near windows or light sources. Their ability to fly allows them to move quickly between products and rooms, spreading infestations throughout homes, grocery stores, or warehouses.
These beetles often enter homes or businesses through infested food products, packaging, or tobacco. Once inside, they lay eggs in or near suitable food sources.
No, cigarette beetles do not typically bite or harm people or pets. They are nuisance pests that cause damage by infesting and contaminating stored food and organic materials, not through direct contact.