Homeowner searching their attic for pests

A soft thump or faint scratch can immediately make you stop and listen, and many people in Michigan are surprised by how often it happens. You may find yourself debating whether it’s just the house settling or something quietly moving out of sight. These small moments of curiosity are more common than most realize.

Wildlife and pests often reveal their presence through subtle sound patterns. Raccoons, squirrels, birds, and mice each create distinct noises, and their activity shifts depending on the time of day. Paying attention to these changes can offer valuable hints about what’s hiding nearby.

With guidance from Griffin Pest Solutions, identifying these clues becomes easier. When you focus on when the sound happens and where it seems to originate, the source becomes clearer. Once you recognize the pattern, deciding how to handle the situation feels much simpler.

What Are Those Strange Noises Trying to Tell You?

When something doesn’t sound quite right, begin by focusing on the basics. Pay close attention to how the noise behaves, where it seems to start, and how often it repeats. These simple details can provide more clarity than you might expect and help reduce uncertainty. Taking a brief moment to listen closely can make everything feel a little clearer.

Each small observation builds on the next, creating a clearer picture of what’s happening around you. Together, these details make it easier to identify where the noise is coming from and how to respond. Adding this information to what you’ve already noticed helps guide your next steps with confidence.

A Guide to Common Noises Coming From Your Walls

Many pests, big and small, use wall voids as hiding spots. Insects, rodents, and even raccoons can slip into narrow spaces, and larger animals make noticeable bumps and scratching sounds as they move. Below are the sounds homeowners hear most commonly: 

  • Scratches in Walls
    Hearing scratching inside walls or ceilings can make anyone uneasy, but paying attention to its direction and consistency often reveals the source. Is it localized or moving? Animals that often cause this include:
    • Carpenter Ants: Faint rustling or gentle tapping from wooden beams or structures can signal the activity of carpenter ants.
    • Squirrels: Short, quick bursts of scratching during daylight hours often indicate squirrels moving through walls or attic spaces.
    • Rodents: Small, rapid movements, along with occasional chewing or scurrying after dark, usually point to mice or rats.
    • Raccoons: Slow, deliberate scratching and heavy thuds at night are typical signs of raccoons navigating walls or ceilings.
  • Gnawing or Grinding in Walls
    To manage their constantly growing teeth, rodents often chew through wood, wires, and plastic. The resulting gnawing noises are repetitive and most noticeable at night or around dawn. Wildlife commonly responsible include:
    • Rodents: These pests are most active after dark. Mice tend to move quietly as they search for food, while rats make louder noises as they chew, travel, and investigate hidden areas.
    • Squirrels: Most active during the day, squirrels produce distinct sounds as they rush through wall voids or squeeze through narrow spaces.
  • Heavy Dragging Sounds in the Walls
    Slow dragging or steady shuffling sounds coming from your attic or beneath your floors usually indicate a larger animal at work. These noises are more measured than the fast, jittery sounds produced by squirrels. The animals most often linked to this are:
    • Raccoons: As they travel or look for food inside ceilings and walls, raccoons frequently cause loud thuds paired with noticeable scratching sounds.
    • Opossums: While navigating attics or wall cavities, opossums generate slow, purposeful thumps and intermittent scratching noises.
  • Bumps in Your Attic or Crashes in the Garage
    In pursuit of shelter or food, many bigger animals make their way into garages and attics. These areas amplify their sounds due to minimal insulation and open layouts. Wildlife that is frequently responsible, include:
    • Opossums: Their clumsy, awkward movements frequently cause bumps and overturned items while they search for food in dark, cluttered areas.
    • Raccoons: Primarily nocturnal, raccoons often tip over tools or containers, and their larger bodies make every movement audible.
    • Rodents: Fast and nimble, these rodents scurry through spaces, creating loud clatters when they disturb small objects.
    • Birds: When trapped, birds may flap frantically and collide with objects, producing chaotic sounds as they attempt to escape
  • Rustling in Vents or Chimneys
    Flapping, fluttering, or rustling in unexpected places might signal birds or bats trapped indoors. These sounds frequently come from vents or chimneys. Likely culprits include:
    • Bats: When in tight areas like attics or vents, bats can make rapid fluttering noises and high-pitched squeaks while searching for a way out.
    • Birds: Birds that become trapped often flap frantically and strike walls, vents, or chimneys, producing loud, chaotic sounds as they attempt to escape.
  • A Buzzing or Humming in the Walls
    If you hear continuous buzzing or humming, it is often caused by stinging insects. The sound comes from countless wings in motion and is especially noticeable during warm, sunny weather. Possible culprits include:
    • Hornets: A loud, forceful buzzing typically reveals hornets at work inside a wall cavity.
    • Wasps: A persistent, piercing hum often indicates that wasps are constructing a nest within your walls.
    • Bees: A consistent, deep humming sound usually signals bees nesting in a wall or attic area.
  • Ticking or Clicking Inside Walls
    If walls emit faint, repeated ticking or clicking, wood-destroying insects could be at work. The noises tend to occur in spurts, so night hours are ideal for noticing them. Common culprits include:
    • Termites: Continuous, faint clicking or tapping within walls often indicates termites feeding on wooden structures.
    • Carpenter Ants: Gentle, irregular ticking or light rustling from wood surfaces often signals the activity of carpenter ants.
  • Thumps on the Roof
    Overhead banging or thumping noises often point to animals navigating your roof. Roofs serve as common pathways for creatures seeking food or safe spots. Likely culprits include:
    • Raccoons: Heavy, deliberate steps and strong thuds usually occur at night, with their large size making every movement noticeable.
    • Cats: Light, rapid footsteps often happen at night or during early morning and evening, sometimes accompanied by meows or purrs near entry points.
    • Squirrels: Quick scampering and the soft sound of nuts rolling or dropping are common during daylight hours. Their movements are much lighter and faster than those of larger animals.
    • Tree Branches: On windy days, scraping or tapping branches can sound like animals moving on the roof, making this a frequent non-pest source of noise.

Unsettling Noises at Home? Trust Griffin Pest Solutions for Help

Even minor rustling or pounding inside walls can be alarming to homeowners. Our expert inspections reveal the animal responsible and the areas it favors. Addressing the issue promptly minimizes property damage and household stress. Wildlife often increases activity at certain times of the year in Michigan, and our exclusion methods keep them from returning.

Protect your home today! Call Griffin Pest Solutions to prevent unwanted animals and pests.

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