Pest Management

Calvert Exterminators is a full service pest management company serving counties across the state of Maryland. Our service is top-notch because of our experience in the field. From rats to mosquito control, we can take care of all your extermination and pest control needs.

Our affordable pest control services include, but are not limited to the following pests:











And many more!

We want to be your pest exterminating resource in the Calvert County area in Maryland. We also provide dead animal carcass removal. Contact us today to rid your home or business of these unwanted, malicious pests!

Bed Bugs

Bed bugs are parasitic insects that feed exclusively on blood. The name of the “bed bug” is derived from the preferred habitat of the species, nearby or inside bedding or other sleep areas. They can also be found in baseboards and furniture. Bed bugs are mainly active at night and usually feed on their hosts without being noticed.

Several adverse health effects may result from bed bug bites, including skin rashes, psychological effects, and allergic symptoms.

In the early 1940’s, bed bugs were thought to be eradicated but have recently been making a come back. It’s a common misconception that bed bugs can only be associated with big cities and filth. More and more, bed bugs are making their way into pristine, suburban homes. Bed bugs can be picked up on purses, luggage and clothing from theatres, hotels and other public spaces and taken back to your home where they hide behind baseboards, under wallpaper, in furniture and even your bed. Before long, they begin to multiply and can be difficult to eliminate.


Fleas are classified as parasites that feed on the blood of any warm-blooded body. The most common species is the cat flea, which often feasts on cats, dogs and humans.

Fleas transport themselves on rodents and other mammals. Fleas usually remain on their warm-blooded hosts at all times and cannot survive long without a host. They infest both household pests and wild animals. Fleas use their powerful legs to jump as high as 16 inches horizontally, making it easy to move from host to host.

Fleas are a threat to humans and animals, transmitting dangerous diseases through fleabites. They can also transfer tapeworms and cause anemia in pets. Fleabites commonly cause painful, itchy red bumps.


There are over 4000 species of Cockroaches in the world but only 4 are considered pests in the United States. They are Oriental Cockroaches, German Cockroaches, Brownbanded Cockroaches and American Cockroaches.

Cockroaches spread bacteria, parasitic worms and other dangerous pathogens as they crawl through the ground picking up germs on their legs and bodies. They then transfer the germs to food and other surfaces. Recent studies link cockroaches to allergic reactions and even asthma.

Oriental Cockroaches

Oriental Cockroaches are dark brown or black, 1” in size and oval in shape. They have six legs and an antenna. They are mainly found in sewers and other damp areas with decaying matter such as basements, firewood piles and in crawl spaces. Oriental Cockroaches are sometimes referred to as water bugs.

German Cockroaches

German cockroaches are light brown or tan with two parallel stripes on their backs. They are 1/2” – 5/8” in size and oval in shape, with 6 legs and an antenna. Most commonly, they are found in cracks and crevices in close proximity to food sources and also prefer staying close to water. They prefer damp and humid residential areas and often reside in kitchens, pantries and other food preparation areas.

German cockroaches are a very common cockroach found in the US home and are responsible for many illnesses and allergic reactions.

Brownbanded Cockroaches

Brownbanded Cockroaches are Brown with banding along the body and wings. They are 1/2” in size and oval in shape. They have 7 legs and an antenna. Brownbanded cockroaches fly inside homes and are most likely found in kitchens and bathrooms. They prefer warmer, drier locations and typically fly towards the ceiling, which can distinguish them from other roaches. They can also be found in cabinets and other enclosed spaces.

American Cockroaches

American Cockroaches are reddish brown in color. They are 2” in size and oval in shape. They have 7 legs and an antenna. American Cockroaches typically live in basements and sewers and tend to stay near drains and pipelines. They are the largest home invading cockroach in the state of Maryland and are most often found in food storage areas. They are most active in warmer climates but can sustain in colder climates as well.


Crickets are closely related to grasshoppers and are often mistaken as grasshoppers. A cricket has long antennae compared to its body length. Unlike grasshoppers, crickets are nocturnal in nature. They lay their eggs in the fall. Only the males produce the distinctive chirp sound, they do this by rubbing their wings together.
Camel crickets resemble spiders and are often mistaken as such. Known for their distinctive humped back, Camel crickets range in color from bronze to dark brown, with patterns of spots or stripes of similar color. They possess long legs as well as antennae. Camel crickets generally do not exceed two inches in Maryland although some species are larger. Camel crickets do not make chirping noises or have wings. They are jumping insects that often leap at their attackers as a defense mechanism. They are drawn to dark, damp areas, and need a moist environment to reproduce. Camel crickets frequently nest in basements, bathrooms, garages, or inside walls. Though menacing in appearance, Camel crickets do not pose a threat to humans or pets.


There are over 12,000 species of ants in the world. Common ants found in the state of Maryland are Argentine Ants, Carpenter Ants, Odorous House Ants, Pavement Ants, Red Imported Fire Ants and Crazy Ants.Ants are social insects, living in large colonies of groups. Depending on the species, single ant colonies can be made up of millions of ants.

There are three kinds of ants in a colony: the queen, the female workers and males. The queen and the males have wings, while workers do not. The queen is the only ant that can lay eggs and spends most of her adult life laying eggs.

Ant colonies also have soldier ants whose sole purpose is to protect the queen, defend the colony, gather food, and search for nesting space.

Argentine Ants

Argentine Ants are 1/16”-1/4” in size, segmented and oval. They are dark brown to black and shiny. They have six legs and an antenna.

Argentine Ants prefer sweet substances but will each almost anything. They are located in wet environments near sources of food. The colonies can grow to be enormous in size sometimes covering an entire garden or even an entire backyard.

Argentine Ants do not pose a health threat but can contaminate food and food surfaces with bodily waste.

Carpenter Ants

Carpenter Ants are 5/8” and oval in shape. They range in color from red to black. They have six legs and an antenna. Carpenter Ants derive their name from their love of wood and their tendency to nest in wood. They can cause significant damage to the wood in your home. The Carpenter Ant does not eat the wood but deposit the wood outside the entrances to the colony. Carpenter Ants diets include insects, meat, fats and sugar.

They build nest near water or damp wood. They also build nest indoors usually entering though damaged wood areas. Although Carpenter Ants don’t carry disease, they are a huge threat to the integrity of the wood in your home. Their tunnels weaken the wood that keeps the house standing and damage can be costly to the homeowner.

Odorous House Ants

Odorous House Ants are 1/16” to 1/8” in size and oval in shape. They are black or brown and have six legs and antenna.

As it’s name implies, the Odorous Ant gets it’s name from the odorous smell it emits when crushed. They tend to reside and nest in and around houses. They are very social and colonies can be over 100,000 in population.

Odorous ants can live for many years and make their nests in exposed soil, under rocks and stones, logs, mulch, debris and any other damp areas. They do not pose a health threat but can contaminate food and food surfaces.


There are many families of spiders, all of which are considered predators. Spiders are not classified as insects but belong to a closely related group called arachnids. Spiders are advantageous to the environment because they reduce the overwhelming numbers of insects in gardens and landscapes. Most spiders are harmless to humans but some can be very dangerous. Spiders can enter homes through screens, around windows, doors and cracks. Some of the most common types of spiders found in Maryland are Wolf Spiders, House Spiders, Grass Spiders, Brown Recluse and Black Widow.

Wolf Spiders

Wolf Spiders are 1/2” in size. Their shape is segmented and oval. They are dark gray and brown. They have eight legs and antenna.

Wolf Spiders reside close to ground level and will burrow into the ground if threatened. They are usually found around the home in gardens. They are primarily nocturnal and are quick movers if disturbed.

Their bite is very painful and poisonous but not lethal. They are usually not aggressive but will bite if provoked. Their bite can be dangerous especially to young children and the elderly. The bite may cause symptoms such as vomiting, dizziness, muscle pain and headaches. First Aid should be sought immediately.

Brown Recluse Spiders

Brown Recluse Spiders are unique. Their bodies are about ¼ inch long and they have a characteristic violin pattern on the back of their body to which their legs are attached, the cephalothorax. These small, hairless spiders are yellowish-tan to dark brown in color with darker legs. Their legs are about one inch in length. They have six eyes where most spiders have eight.

The Brown Recluse Spiders seek out dark, warm, dry environments such as sheds, closets, porches, barns, basements, wood piles, tires and storage areas.

Just like other spiders, the Brown Recluse is shy and non-aggressive but will bite if threatened or with contact against the skin. Most bites occur in the summer months and can be very dangerous even causing death especially for children and the elderly. First Aid should be sought immediately after a bite.

Grass Spiders

Grass Spiders are 3/4” in size with long spinnerets. They are dark gray or brown with stripes. They have eight legs and antenna.

Grass Spiders live and make their webs in tall grassy areas, heavy ground cover and thick shrubbery. Their webs are constructed near ground level around steps, window wells, and foundations. Grass Spiders feed on other insects like mosquitoes and flies.

Although their bite is painful, they are not dangerous to humans.

These spiders can bite humans and cause a small irritating spot, which may not heal for 8 to 10 days. Bites can be dangerous especially to children and the elderly.

House Spiders

House Spiders are 1/2” in size and their shape is segmented and oval. They are dark brown or black and have eight legs and antenna.

House Spiders move rapidly and are usually found near window frames, under eaves, in gutters, sheds, toilets, and around rocks and like to hide in corners. They nest wherever they can attract their prey. House Spiders eat other insects such as mosquitoes, flies and moths. They enter the house in early fall and are active for several months weaving webs in confined spaces.

These spiders can bite humans and cause a small irritating spot, which may not heal for 8 to 10 days. Bites can be dangerous especially to children and the elderly.

Black Widow Spider

The adult female Black Widow Spider is the most poisonous spider in North America. The female is easy to recognize by the red hourglass shape on the underside of her abdomen. She has a shiny black body with various red markings on the top. The Black Widow will grow to 8-10mm in size.

The Black Widow is common in Maryland but rarely found indoors. These spiders are most often found in basement window wells, beneath lawn benches or porches, in garages, tool sheds, old lumber piles, rock piles, trash piles, and water meters.

Black Widows can lay up to 400 eggs at a time and are known to be cannibals, often eating each other. They also feed on beetles, flies, grasshoppers, moths and other spiders. Their webs are thick and unstructured resembling a cobweb.

Black widow bites are very painful. Doctor care should immediately be sought. It is very important to recognize this spider and describe the symptoms accurately so the physician can offer treatment.


Rats and mice can carry and spread disease, transmit other pests such as lice and fleas, contaminate food areas, and leave droppings that spread harmful germs, making them dangerous to humans. Some common rats and mice in Maryland include Deer Mice, House Mice, Norway Rats and Roof Rats.

House Mice

House Mice are 2” in size and round in shape. They are light brown in color.

They can live indoors or outdoors and can squeeze their bodies through tiny spaces as small as a dime. House Mice are the most common breed of mice in the United States and breed quickly.

House mice carry fleas, lice, mites, and ticks, which they then carry into your home. Their droppings contain harmful germs and contaminate food and food surfaces.

Deer Mice

Deer Mice are 5”-8” in size and round in shape. They are brown with white feet and underbelly.

They typically live outdoors in rural areas where they seek shelter in hollow logs or debris piles. When they enter the indoors, they usually remain in garages, crawlspaces or attics.

Deer Mice carry a potentially dangerous virus known as Hantavirus Pulmonary Syndrome. The virus is transmitted though their dead carcasses or by inhaling airborne urine droplets of diseased mice.


Norway Rats

Norway Rats are 10”-12” in size and long in shape. They are dark brown or gray in color.

Norway Rats reside in wood piles and fields and prefer farmland although they have adapted to a more urban lifestyle and can also be found in sewers and garbage-strewn areas. They can squeeze their bodies through areas as small as a nickel. They feed on trash, seeds, meat, dairy, birdseed, and compost.

Norway Rats are very dangerous and can spread harmful parasitic diseases. Their droppings also spread harmful germs and contaminate food and food surfaces.

Roof Rats

Roof Rats can be up to 16” in size and their shape is long and oval. They are black in color.

Normally, they are found in the upper level of buildings but will also make their homes under buildings. They are known for poor vision but overcome this with their strong sense of hearing, touch, taste and smell. Roof Rats will eat almost anything they find and like to chew through various materials.

Roof Rats are the creatures known for spreading the Bubonic Plaque. They spread parasitic diseases and contaminate food and food surfaces.


Mosquitos got their name by being tiny flies and are infamous for being annoying, sucking your blood, and leaving bite marks on your body. Being annoying isn’t their only fault – they can be deadly too.

In fact, mosquitos have been called one of the biggest killers in the world. Mosquitos carry diseases like Malaria West Nile Virus, Encephalitis, Chikungunya, Heartworm (in pets), and Zika Virus just to name a few.

Mosquitos can be found just about anywhere throughout the world and typically breed in standing water. They can thrive in any climate until the extreme cold months kill them off. In Maryland, mosquitos season typically starts in late April and extends to September.

Call Today!


Maryland Coverage Area

Calvert County
Charles County
St Mary’s County
Anne Arundel County
Prince Georges County

Payment Methods