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Spartan Animal & Pest Control

Humane Animal And Pest Control In MA

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  • 508.504.9255
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Common Signs You Have a Bat Infestation in Your Home

November 17, 2025 by Spartan Animal & Pest Control

hand reaches for a light switch while a bat hangs upside down inside a glass ceiling light fixtureBats are essential contributors to the ecosystem, consuming hundreds of bugs every hour. While you may only rarely see them because they blend in with the night, you might be encountering them more often than you realize if they are sharing a home with you. If you think you might have a bat infestation, it is important that you promptly contact a professional for bat removal.

Bats carry diseases, such as rabies, and so it is best to let experts handle their removal. Certain species of bats are endangered, and so harming them could be a violation of federal protections. Additionally, bats can be hardy and persistent invaders; without the proper knowledge of how to get rid of them, your success likely will not last long.

Here are some of the most common signs that you have a bat infestation in your home so you can call a pest control professional before they become further entrenched.

You See Bats

The most obvious sign that you have a bat problem is if you directly see bats entering and exiting your home. Bats are common at night, so seeing more than one during the evening is not necessarily a cause for concern if they are just flying in your neighborhood. However, no bat should be finding any sort of safe resting place on or in your home. If they are, it is time to act quickly, before they set up a more permanent presence.

You See Droppings

Because bats are always on the go, eating and hunting, they have a fast metabolism. This might keep them going for hours on end, but it also leads to significant waste production. Bats may defecate up to 30 times per day, and humans can recognize their droppings (called guano) if they know what to look for.

Droppings can look like small, brown or black grains of rice, with slight variations depending on which species of bat you are dealing with. Do not touch droppings; disturbing them can cause a respiratory illness called histoplasmosis. Droppings accumulate quickly and require a specialized cleanup process, so call for help as soon as you see them, before they damage your home and impact your health.

Unexplained Streaks Appear Outside Your Home

Grey Long Eared Bat Sitting on WoodA bat’s fur is full of oils to keep them warm and dry, as well as to leave their scent for others to identify. If bats are going in and out of your home without your knowledge, you might find greasy streaks at their transit point(s) as they squeeze through repeatedly. Dirty streaks could be a sign that bats are entering.

Your Ceiling Develops Stains

Bats roost in attics and crawl spaces where they can remain undisturbed. As they gradually produce moist waste, such as urine and fresh guano, the moisture can seep into your home’s features. This, in turn, may lead to gradually developing stains on your ceiling.

It is important to investigate these marks quickly; while they may arise from a different cause, such as water damage, any problem that causes staining should be fixed as soon as possible. This is particularly true if the stains are caused by pests, which tend to multiply and worsen the problem exponentially.

You Notice an Unusual Smell

Bat guano and urine have a pungent odor, especially as moisture and waste accumulate over time. People describe the smell in two main ways: either as a sickly-sweet, decaying odor or as an ammonia-like scent that is reminiscent of a dirty cat litterbox. If you smell something like this, contact a pest control professional right away to investigate.

You Hear Sounds

Many people believe that bats make a high-pitched noise that is beyond the range of human hearing, but that is not true. Humans can hear bats, though their echolocation might sound faint or more like a chirp than a screech. Hearing bat vocalizations, especially during the day when they are not flying around outside, is an important indicator that they may be roosting in your home.

Similarly, bats might make noise as they move about your space. Thudding, scrabbling, or a slapping sound from their wings can indicate that bats have taken up residence somewhere in your house. You should call a professional to investigate; other pests, such as mice and rats, may also cause these issues.

Get Help With a Bat Infestation Before It Worsens

a bat flying under the roofDo you suspect that your home has welcomed some unwanted tenants? Would you like to investigate your attic preemptively to identify potential entry points and put a stop to their intrusion before it begins? The professionals at Spartan Animal & Pest Control can help you take charge of your home’s defense, either before or during an invasion.

From blocking entry points to reducing the appeal of your property for pests, our team will help you keep your home clean and visitor-free. Contact Spartan to schedule a visit!

Filed Under: Animal Control

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288 Hersom Street New Bedford, MA, 02745
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Spartan Animal and Pest Control
Spartan Animal and Pest Control
5.0
Chelsea F
Chelsea F
14:21 16 Nov 22
Very professional I called for an appointment he was here the next day with everything needed. He understood how petrified I was over the rodent issue we were hearing in our walls. He was able to find and close up any possible outside entrances and placed outside poison and baits inside with more poison. He came 3 more times for check up and addressed my concerns and knock on wood he was right nothing has returned since. His work and prices are so worth it.
Elaine DaCosta
Elaine DaCosta
17:24 24 Oct 22
Corey showed up at the appointed time. Very friendly and thorough. He answered all the questions that I had. He explained to me exactly what he was doing and why. I’m very happy with the service.
Anne Rymszewicz
Anne Rymszewicz
20:19 14 Sep 22
I Called Corey Tuesday evening and he was here at 9:30 the next morning for a wasp problem in and out of our home. This is our second time using him as the first time was for a mice issue and after his visit, we have been mice free for well over a year now. His knowledge of these critters is amazing, knowing their detailed habits. Wishing I could give a rating over 5 Stars. Look no further for any time if removal of extermination - you will find no better person for the job.
Beth Squires
Beth Squires
22:34 24 Aug 22
Corey was excellent! He is responsive, professional, and honest. His prices are much better than other local pest services. I would highly recommend!
Linda D
Linda D
02:58 21 Aug 22
Corey was punctual and polite.He explained the procedure then eradicated the problem. I highly recommend this company.
Heidi Stucki
Heidi Stucki
10:37 12 Aug 22
Punctual and a reasonable price, I would recommend Spartan to family and friends!
Michael Duclos
Michael Duclos
21:09 03 Aug 22
I had a wasp nest somewhere below my deck, bothering the family in the swimming pool. No way I was attempting to find the nest myself without a bee suit and flamethrower, so I called Corey at Spartan. He went under there armed with only a flashlight, found the nest and took care of it! Not only was he prompt, fast, efficient and effective, but the guy had guts of steel. Hoping to never encounter any more killer bees, rabid raccoons, attacking ants, or any other predators, but if I do, I’m glad I know I got Corey on my side!
Randy Lauderdale
Randy Lauderdale
16:31 13 Jul 22
Called Corey on Sunday about a yellow jacket nest removal. He go right back to us on Sunday! Set up appointment. Corey confirmed and showed up right on time and quickly took care of the nest. Great service! Highly recommended
Eugene Karabanov
Eugene Karabanov
13:26 11 Jun 22
Absolutely fantastic service, quick to respond, knowledgeable, and stands by his work. Corey is a gem. Highly recommended.
BILLY ARNOLD
BILLY ARNOLD
19:49 10 Jun 22
As usual, Corey was on time and very conscience. He checked for the problem and got right to work on the solution immediately. I'll always call Spartan for any pest control needs.
Kawaii Kristina
Kawaii Kristina
18:57 07 Apr 22
We had a squirrel running around the attic and walls of our new home. After calling a few pest control places in the area, we decided on Spartan Pest Control as they had the most reasonable price, and fast friendly customer service. The owner is extremely personable, polite, and thorough. He uses humane traps, and guarantees his work for 3 years. I would definitely use them again!
Lisa Geraghty
Lisa Geraghty
19:01 03 Feb 22
Corey is so friendly and professional. His rates are fair. We had bats and mice to contend with and he was very thorough. I would highly recommend Spartan Pest Control. It was an absolute pleasure dealing with Corey.
Jennifer Zall
Jennifer Zall
01:20 31 Jul 21
Corey is very responsive, professional and friendly. We needed help getting rid of carpenter ants, spiders and a sizable wasps nest. He came right out and took care of all that for us. I highly recommend him for all animal and pest needs! We are very happy with his services.
Joanne Bento
Joanne Bento
16:26 13 Jul 21
Corey did an outstanding job at trapping a rat in my garden. Was trapped within 4 hours of him setting the trap. Very knowledgeable about wildlife. Highly recommend him.
David Barrett
David Barrett
19:52 26 May 21
I cannot recommend Spartan Animal and Pest Control high enough. Cory, the owner, was very professional, articulate and extremely knowledgeable. He did a superb job. Spartan also installs chimney caps and I had my chimneys capped as well. I hope I never have a pest problem again but if I do I will call Spartan without hesitation.
Lee Marie
Lee Marie
21:48 23 Mar 21
Prompt, efficient, personable.We had a pretty bad squirrel problem, and they got rid of them all. What i really liked was that they use humane means.I would definitely use them again.
Michael Brangwynne
Michael Brangwynne
21:33 07 Dec 20
Outstanding job. Moved his schedule around to come sooner than later. Very good businessman that was very professional and worked fast. Very knowledgeable and explained what he was doing with the service as he did it. Very reasonable price and overall great experience. Highly recommend.
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