Cockroach vs. Beetle – Differences & How to Identify

LaJaunie's Pest Control By: LaJaunie's Pest Control Calendar Icon May 21, 2025
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You spot a reddish-brown, oval-shaped insect racing across the kitchen floor. At first glance, you might wonder: is that a cockroach or a beetle?

While they may seem similar, these bugs come from completely different orders and cause different kinds of problems for homeowners in Louisiana.

This article will help you recognize the key differences between these pests, show you how to identify them based on appearance and behavior, and offer practical steps to keep your home pest-free.

We’ll also cover when it’s time to call in pest control services, especially when a cockroach infestation starts to get out of hand.

Key Takeaways

Cockroaches and beetles may look similar, but they behave differently and carry different risks inside Louisiana homes.

The easiest way to tell them apart is by checking their antennae, movement, hiding spots, and signs left behind.

Getting rid of them means removing food and water, sealing entry points, using traps, and deep cleaning.

Local pest control services offer fast help and long-term solutions for serious cockroach or beetle infestations.

Cockroach vs. Beetle: Key Differences

cockroach vs beetle

At first, cockroaches and beetles might seem alike due to their similar oval-shaped bodies and hard outer shells. But once you know what to look for, you’ll spot the differences quickly.

Here’s a look at how they compare:

FeaturesCockroachesBeetles
ColorReddish-brown to dark brownLight brown, black, or metallic
WingsMay have wings; some flyHard shell covers their wings
Activity TimeMostly active at night (nocturnal)Depends on the types of beetles
HabitatDamp crevices, kitchens, bathrooms, basementsIndoors (e.g., closets) or gardens
Health RisksCan spread diseases like SalmonellaMostly harmless; some damage the fabrics

Cockroaches, especially species like the German cockroach and American cockroach, are more likely to cause an infestation and pose a risk to your health.

How To Identify a Cockroach or a Beetle in Louisiana

When you’re trying to figure out what kind of pest you’re looking at, these signs can help.

Look at the Antennae and Top Section of the Body

Cockroaches have long antennae that are often longer than their bodies. These help them navigate tight crevices and dark areas like basements and sewers.

Their top section of the body (or thorax) is usually flat and shield-like, often hidden under a section called the pronotum.

On the other hand, beetles have much shorter antennae and a more rounded thorax, often visible from above.

Examine the Body Shape and Outer Shell

Roaches have a soft, flat, and oval-shaped body, perfect for slipping into cracks. The body shape allows them to hide in tight spaces.

Beetles, especially ground beetles, have harder elytra (the protective shell over the wings) and a tougher exoskeleton (or outer shell) overall. They feel more rigid when handled and have a bulkier frame compared to the flexible shape of roaches.

Note the Movement and Behavior

Roaches are fast and quick to scurry when disturbed.

If you catch one running across the floor, especially at night, that’s a telltale sign. Many types of cockroaches, including the Oriental cockroach, will flee from light.

Beetles are generally slower and more likely to freeze or roll over when disturbed. Some beetles, like carpet beetles, are drawn to light and may appear on windowsills.

Check for Signs of Pest Activity

Roaches leave behind droppings, which may resemble black pepper or smears, and egg cases that are often found near appliances or hidden in cracks. You might also notice nymphs, juvenile roaches, during an active infestation.

Beetle infestations can leave behind larvae, shed skins, or damaged fabric, especially in closets and storage areas.

How to Get Rid of Cockroaches and Beetles in Louisiana

Both roaches and beetles can make themselves at home if you don’t act fast. Here’s what to do when you start seeing signs of trouble.

Cut off Food and Water Sources

Most roaches love moisture and will hang around water bugs in sinks, under refrigerators, or near leaking pipes. They’ll also eat just about anything, from crumbs to grease. Beetles, especially carpet beetles, are more likely to feed on natural fibers, food packaging, or pet hair.

Cleaning up food, vacuuming regularly, and repairing leaks are important first steps in pest control.

Seal up Entry Points

Cockroaches can enter through tiny gaps in doors, windows, and plumbing.

If your home has cracks around the foundation or access points near sewers or drains, sealing them is a must. This also helps prevent other pests like crickets and termites from getting in.

Monitor With Traps

Sticky traps and monitors can help you understand where the pests are coming from. For roaches, place traps along baseboards and behind appliances.

For beetles, focus on closets and pantries. Identifying hot spots helps you place treatments effectively.

Deep Clean and Reduce Clutter

Beetles can nest in cluttered storage areas, especially if there’s wool, leather, or stored grain. Roaches thrive in cluttered, warm spaces where crumbs accumulate.

Clean behind stoves, move furniture, and don’t forget to clean under sinks and in attics.

Use Professional Pest Control Solutions

Cockroach control can be complex, especially if you’re dealing with species of cockroaches like the German cockroach, which reproduces rapidly. DIY sprays can worsen the problem by spreading them to new hiding spots.

At LaJaunie’s Pest Control, we use growth regulators and professional-grade baits that don’t interfere with your home’s routine.

For beetles, like the carpet beetle, we tailor treatments to the life cycle of the pest, from larvae to adult, without damaging your belongings.

Spotted signs of roaches or beetles? Our team offers same-day pest control across Louisiana, from Thibodaux to Baton Rouge. Reach out today and let’s get your home back to being pest-free. 

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985-859-7378

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Written By: LaJaunie's Pest Control

Ian Chi is the President and CEO of Simple Pest Management, dedicated to providing families with effective, customer-focused pest control. Based in San Diego, Ian leads a team that prioritizes community bonds and a positive workplace, ensuring homes remain safe and pest-free. With a mission centered on family well-being, Ian believes that "the answer is Simple" for all pest issues.

LaJaunie's Pest Control is a local family-owned business

Serving Louisiana homeowners for over 15 years

Louisiana is our home, and our customers are our neighbors. We were founded in Thibodaux, Louisiana, by Jared and Skye LaJaunie in 2008. We'd love to make you a part of the LaJaunie's Pest Control family. Contact us today to get started.

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