Winter’s Unwanted Houseguests: Animals in Your Home

As colder weather finally settles in, you might find yourself sharing your home with some unexpected guests. Mice, raccoons, squirrels, and even possums often look for warmer places to stay as the weather grows colder. Attics make an ideal retreat, providing shelter from the elements. If you’re hearing strange noises—such as squeaks, scurrying, or even hissing—especially late at night, it’s likely that a critter has moved in.

If an animal has taken up residence, it’s important to act quickly before they get too comfortable. Once settled, they may start nesting, which can lead to further damage. Most animals leave clues that help identify them. High-pitched squeaks or chewing sounds usually mean rats or mice, while fast scurrying is often a sign of a squirrel or a mouse. Raccoons, known for their snarling and hissing, tend to make more aggressive noises. While some animals move into your attic on purpose, others may be there by accident and are simply trying to find a way back outside. Understanding what you’re dealing with can help you determine the best course of action.

Animals in your attic aren’t just a nuisance; they pose serious risks to your home. Most will gnaw on anything they encounter, especially mice and rats, which chew through wiring, creating fire hazards. Larger animals like raccoons and possums can tear apart insulation and ruin ductwork, leading to costly repairs. Their droppings and urine can also create unpleasant odors and unsanitary conditions.

If your problem is mice or rats, they likely came in looking for warmth and water. These small animals can squeeze through holes as tiny as a dime, so sealing any potential entry points and fixing leaks is essential. Setting bait traps can catch some of the rodents already inside, but long-term solutions require securing all access points to prevent re-entry.

Squirrels, on the other hand, usually prefer the outdoors and may have come into the attic by mistake. They often get in through soffits or vents. One of the best ways to help them leave is by installing an exclusion door—a one-way exit that allows them to leave but not return.

Raccoons are more determined and will stay put if they find a warm, dark spot. Since they’re nocturnal, try leaving lights on in the attic and playing music to encourage them to find somewhere quieter to rest.

Bats are trickier, as they’re usually very quiet unless there’s a large colony present. Due to potential health risks, bat removal should only be performed by a certified DEEP specialist.

Finally, possums, much like raccoons, are resilient squatters that often refuse to leave. Their droppings can quickly accumulate, leaving a huge mess and a foul odor. The best way to handle a possum is to call a professional for humane trapping and removal.

Ultimately, dealing with unwanted animal visitors is best left to professionals. Ignoring the problem can result in more than a few sleepless nights—it can lead to extensive and costly repairs.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.

Keep Critters Out By Animal-Proofing Your Attic

Dealing with an unexpected attic visitor can be incredibly frustrating. From midnight scurrying to high-pitched chattering, these uninvited guests can disrupt your peace and quiet. But it's not just about the noise—animals love the dark, secure environment your attic provides, making it a prime spot for nesting. The last thing you want is for one animal to invite their friends or, worse, start a family up there. Here are four updated strategies to keep your attic free from furry intruders:

1. Trim Back Trees

Prevent easy access by trimming trees close to your home. Squirrels and chipmunks can use overhanging branches to jump onto your roof. These critters are notorious chewers; once inside, they can cause serious damage to wiring and piping. Avoid the hassle of expensive repairs by maintaining a clear perimeter around your roof.

2. Regular Roof Inspections

Small holes and loose shingles are open invitations for animals. Ensure your roof is in top condition, paying extra attention to the areas around chimney flashing. Animals need water, and a leaky roof can provide a constant supply, making it an attractive nesting spot for rats and mice.

3. Install a Chimney Cap

Chimneys are like open doors to curious animals. Installing a simple mesh chimney cap can prevent squirrels, raccoons, and other critters from exploring your fireplace. It’s an easy, effective way to keep your home safe while maintaining proper ventilation.

4. Secure Your Vents

Vents are necessary for your home’s ventilation but can also be entry points for animals. Install vent covers to allow air to flow while keeping pests out. This simple addition can prevent mold and mildew while safeguarding your attic.

Identifying and Handling Intruders

If you suspect you already have an attic intruder, identifying the type of animal can help you take the right steps. Rats are persistent gnawers with distinct squeaks. Mice may sound louder than expected due to their rapid movements. Raccoons can be identified by their screams or hisses, while squirrels are quieter but destructive to insulation. Possums are often noted for their strong odor.

Whatever the animal, it's crucial not to let it settle in. Professional exterminators can offer solutions such as trapping, releasing, and one-way exclusion doors to ensure the animals leave without harming your home.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions for Bob to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.

Animals Hiding in Your Home This Winter

As nights and early mornings finally settle into a freezing pattern, you might find yourself sharing your home with an unwanted critter or two. The first sign of an animal intrusion is likely the noise. Late at night when all should be quiet, you might be woken up to squeaking, rustling, or even hissing somewhere above your head. As winter sets in, mice, raccoons, possums, and other small animals start looking for warmer shelter, and attics are a popular place for them to reside. What’s important is to take action quickly, before they start to get too settled and begin to nest where they shouldn’t. 

Generally, the noise that the animal makes will tell you what you’re dealing with. Squeaking or chewing sounds are likely rats, scurrying is probably a squirrel or mouse, and snarls or hissing is usually a raccoon. While some of these animals are looking for a place to call home, others may have ended up in your attic by accident and are looking for a way out. It’s a good idea to know the difference. 

Almost all animals are likely to chew through wiring and bigger ones like raccoons or possums can tear apart insulation and ruin ductwork. Even small mice can make unwanted nests and leave an awful smell from their excrement. Although dealing with animal removal is a pretty awful job, leaving an unwanted visitor alone will end up costing you a lot more than sleep. If removing pests isn’t on your resume, call in an exterminator to take care of the problem. 

If you have mice or rats, they have likely moved in because there is a water source. Simple bait traps will help get the ones that are already there, but a mouse can fit through a hole the size of a dime, so rodent-proofing is essential. You’ll also want to inspect for any roof leaks as part of the job.

Squirrels are one of the animals I mentioned that might have come in accidentally. They usually prefer it outside and will definitely be looking for a way to leave the attic. Soffits and vents are likely places for squirrels to be able to get in so your best bet is to install an exclusion door that lets the rodents out so they can’t come back. 

A one-way door will also work for raccoons, who don’t mind sticking around if they find a warm, dark, and comfy place to live. However, since raccoons are nocturnal, you can make your attic less accommodating by leaving the lights on and even playing music. They’ll soon look for somewhere else to live. 

Bats are elusive in that they are very quiet and you might not even hear them unless there is a decent size colony making their home in yours. Removal is key and should only be done by a registered DEEP specialist as bats can be diseased. 

Finally, there are possums which, similar to raccoons, won’t want to leave. These guys are pretty resilient and they go to the bathroom everywhere, leaving a huge, smelly mess behind. The best method to get rid of a possum is to have it trapped and removed by a professional. 

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.