Pests & Poop in a House: The First-Time Homebuyer’s Guide to Avoiding Expensive Surprises

Buying your first home? Learn how to spot termites, carpenter ants, rodents, bat guano, and hidden pest damage before closing day. This guide helps first-time homebuyers avoid costly surprises and homebuyer remorse.

Buying your first home is exciting. You’re imagining furniture layouts, paint colors, backyard barbecues, and maybe even your future dog running through the yard. But hidden behind the charm of a beautiful home could be something far more expensive than outdated countertops or ugly wallpaper:

Pests.

And not just the occasional spider or harmless ant.

We’re talking about termites destroying structural beams, carpenter ants hollowing out wood, rats nesting behind walls, squirrels chewing electrical wires, and bat guano creating respiratory hazards in the attic.

It sounds dramatic until you’re handed an $88,000 repair bill.

Yes — that actually happened to someone close to me.

That’s why first-time homebuyers need to understand something many people never talk about during the homebuying process:

A home can look beautiful while hiding massive pest-related damage underneath the surface.

Unfortunately, many buyers only discover these issues after closing day — when the repair bills become their problem.

And this is one reason first-time homebuyer remorse is so common.

According to multiple housing studies, more than 50% of first-time buyers experience some level of buyer remorse, and recent surveys show that over 90% of buyers regret at least one aspect of their purchase.

The truth is simple:

You are expected to make one of the largest financial decisions of your life while knowing very little about what can actually go wrong inside a house. That’s why education matters.

This guide will help you understand:

• Common household pests found during home inspections
• How to identify pest damage
• What pest droppings look like
• Which pests can destroy a home’s structure
• What first-time homebuyers should look for before making an offer

Because avoiding homebuyer remorse starts with knowing what to inspect before you buy.

PRO TIP >> Most (not all) most of the pest droppings can be viewed prior to making an offer! 

Why Pest Inspections Matter for First-Time Homebuyers

Many first-time buyers focus heavily on:

• Mortgage rates
• Down payments
• Kitchen upgrades
• Paint colors
• School districts
• Granite countertops

But they overlook what’s happening behind the walls, inside crawl spaces, and above ceilings.

That’s where pest damage often hides.

The problem is that pest-related repairs can become extremely expensive very quickly.

Structural repairs from termites or carpenter ants can cost tens of thousands of dollars. Electrical repairs from rodents or squirrels chewing wires can create fire hazards. Bat infestations can lead to expensive cleanup and health concerns.

And here’s the important part:

Most pest problems do not happen overnight.

They develop slowly over years.

Which means a house can appear perfectly normal while serious damage quietly grows underneath the surface.

That’s why attending your home inspection matters.

Never skip it.

Never assume someone else will catch everything.

The more educated you are before purchasing a home, the more protected you’ll be financially afterward.

Carpenter Ants: Silent Destroyers of Wood Structures

Carpenter ants are one of the most destructive pests found in homes.

Unlike termites, carpenter ants do not eat wood. Instead, they excavate it to build tunnels and nests.

That sounds harmless until you realize they can hollow out major structural components over time.

What Carpenter Ants Look Like

Carpenter ants are typically:

• Large black ants
• Between ¼ and ½ inch long
• Sometimes winged
• Common in damp or decaying wood

Where Carpenter Ants Live

They are commonly found in:

• Basements
• Attics
• Wall voids
• Damp window frames
• Areas with water damage

How to Identify Carpenter Ant Damage

One major warning sign is something called frass.

Frass looks like:

• Fine sawdust
• Tiny wood shavings
• Small debris piles near wood structures

You may also notice:

• Rustling sounds inside walls
• Hollow-sounding wood
• Small openings near wooden beams

In one home inspection, an inspector discovered a massive carpenter ant colony hidden above an addition inside a tight crawl space area. The nest was reportedly over two feet wide and had been damaging the home’s beams for years.

Without that inspection, the buyers likely would have inherited a major structural problem.

Termites: The Pest Every Homebuyer Fears

Few words scare homeowners more than termites.

And for good reason.

Termites cause billions of dollars in property damage every year in the United States.

What Termites Look Like

Subterranean termites are:

• Small
• Pale brown or white
• Soft-bodied insects
• Usually found underground

Signs of Termite Activity

Termites build mud tubes to travel between their colony and food source.

Common warning signs include:

• Mud tubes on foundations
• Hollow wood
• Bubbling paint
• Sagging floors
• Sticking windows or doors

What Does Termite Poop Look Like?

Termite droppings resemble:

• Tiny sand-like pellets
• Small grains near wooden areas
• Light brown or tan debris

Many homeowners mistake termite frass for dirt or sand.

That’s exactly why termites are so dangerous.

One homeowner living in a sandy area ignored what looked like ordinary sand near their walls — only to later discover it was termite activity.

Termites are sneaky.

And by the time visible damage appears, repairs can become extremely expensive.

Mice and Rats: Small Animals, Big Problems

Rodents are among the most common household pests.

And while they may seem less destructive than termites, mice and rats create serious problems inside homes.

What Mice Look Like

Mice are:

• Small gray or brown rodents
• About 2–4 inches long
• Fast-moving
• Mostly active at night

What Mouse Droppings Look Like

Mouse droppings are:

• Small
• Dark
• Shaped like grains of rice

You’ll commonly find them:

• Inside cabinets
• Near food
• Along walls
• In attics or basements

The unsettling reality is that mice travel everywhere:

• Countertops
• Utensils
• Pantry shelves
• Storage areas

What Rats Look Like

Rats are larger than mice and typically:

• Measure up to 9 inches long
• Have coarse fur
• Live near food sources

What Rat Poop Looks Like

Rat droppings:

• Are larger than mouse droppings
• Resemble dark raisins
• Often appear near garbage or kitchens

Rodents also chew:

• Insulation
• Wood
• Plastic pipes
• Electrical wires

And damaged wiring creates real fire risks. 

Squirrels in the Attic: Cute Outside, Destructive Inside

Squirrels may look adorable in the park, but inside a home they can become a nightmare.

How Squirrels Enter Homes

Squirrels commonly enter through:

• Roof openings
• Chimneys
• Eaves
• Vents
• Holes they chew themselves

Problems Caused by Squirrels

Once inside, squirrels may:

• Destroy insulation
• Chew wiring
• Damage wood
• Create noise inside walls and attics

Many homeowners describe hearing squirrels race across the attic at all hours of the day.

What Squirrel Droppings Look Like

Squirrel droppings:

• Are round
• About pea-sized
• Lighter in color than rat droppings

Because squirrels chew electrical wiring, they should never be ignored during a home inspection.

Bats in the Attic: Hidden Health Hazards

Bats actually provide environmental benefits because they eat insects like mosquitoes.

But inside a home, they can create major health concerns.

Where Bats Live

Bats commonly roost in:

• Attics
• Chimneys
• Eaves
• Wall voids

What Bat Guano Looks Like

Bat droppings, called guano:

• Are dark
• Crumbly
• Break apart into powder
• Often pile beneath roosting spots

One unique feature is that bat guano may sparkle slightly due to insect remains.

Why Bat Guano Is Dangerous

Bat guano can grow fungus spores associated with respiratory illness.

Large infestations may also create:

• Strong odors
• Staining
• Air quality problems

If bats are discovered during the inspection process, buyers should consult licensed professionals immediately.

Bees and Wasps: More Than Just a Nuisance

Not every pest destroys wood, but stinging insects can still create serious issues.

Honeybees

Honeybees are beneficial pollinators, but hives inside walls can become expensive to remove.

Signs include:

• Buzzing sounds inside walls
• Bee traffic near siding or vents
• Sticky honey leakage

Wasps

Wasps commonly build nests:

• Under roof eaves
• In bushes
• Inside garages
• In attics
• Underground

Their papery gray nests are often visible from outside.

For buyers with allergies, wasp infestations can become dangerous quickly.

Professional removal is usually the safest option.

Why First-Time Buyers Must Attend the Home Inspection

One of the biggest mistakes first-time buyers make is skipping the inspection entirely — or not attending it.

Never do this.

A quality inspector can identify:

• Pest damage
• Moisture problems
• Structural concerns
• Unsafe wiring
• Ventilation issues
• Foundation warning signs

But inspectors also explain things in real time.

That education is invaluable.

You should ask questions, take notes, and understand exactly what future repairs could cost you.

Remember:
A beautiful kitchen does not matter if the structural beams underneath the home are compromised.

The Hidden Problem in the Homebuying Industry

Here’s something many first-time buyers eventually discover:

Most professionals involved in a real estate transaction are focused on completing the transaction.

Real estate agents, lenders, brokers, and contractors may not fully educate you about long-term ownership risks. Not because they are bad people.

But because:

• Time is money
• Transactions drive income
• Specialized inspections fall outside their expertise >> this is a big one!
• AND they don't have a crystal ball

That means you must become the CEO of your homebuying journey.

You cannot rely entirely on others to protect your future finances.

Education is your greatest advantage.

How to Avoid First-Time Homebuyer Remorse

The best way to avoid regret is preparation.

Before buying a home:

• Learn about common inspection issues
• Understand pest warning signs
• Research repair costs
• Attend inspections
• Read inspection reports carefully
• Budget for maintenance
• Ask questions constantly

Homeownership can absolutely be an incredible long-term investment, but only when buyers understand what they are getting into before closing day.

Knowledge reduces surprises.

And surprises are what destroy budgets.

Final Thoughts: Protect Yourself Before You Buy

Buying your first home is exciting — but it’s also overwhelming.

There are mortgages, inspections, taxes, appraisals, insurance policies, negotiations, contracts, and endless financial decisions happening all at once.

Adding hidden pest damage into the equation can become financially devastating if you are unprepared.

That’s why education matters so much.

The more you understand before house hunting, the more confident and protected you become during the process.

Remember:
You are not “just a buyer.” You are the CEO of your homebuying journey.

And the knowledge you gain today could save you thousands of dollars — and years of regret — tomorrow. Want more first-time homebuyer education designed to help you avoid expensive mistakes and homebuyer remorse?

Check out the free class, Homebuying Chaos Unwrapped, and continue building the foundation every smart first-time buyer needs before purchasing a home.

Frequently Asked Questions

Can pests cause electrical fires? 

Yes. Mice, rats, and squirrels commonly chew wiring, which can create fire hazards.

What should I do if pest damage is discovered before closing?

Buyers should request further inspections, negotiate repairs or credits, and fully understand repair costs before moving forward.

Is pest damage covered by homeowners insurance?

Usually not. Most insurance policies consider pest damage preventable maintenance rather than sudden accidental damage.

What smells indicate pests in a home?

Strong ammonia smells, musty odors, rotting smells, or unusual attic odors can indicate rodents, bats, or hidden infestations.

Can pest droppings make you sick?

Yes. Rodent droppings, bat guano, and other pest waste can carry bacteria, viruses, and harmful fungi.

How expensive can termite damage repairs become?

Severe termite damage can cost tens of thousands of dollars depending on structural repairs needed.

Why do first-time homebuyers overlook pest problems?

Many buyers focus on cosmetic features and do not understand the importance of inspections and hidden maintenance issues.

 

How can first-time buyers avoid costly pest surprises?

Education, thorough inspections, attending walkthroughs, and understanding warning signs are the best ways to reduce risk.

 

Can moisture problems attract pests?

Yes. Damp wood and moisture issues attract termites, carpenter ants, mold, and other pests.

What is the biggest pest risk for homeowners?

Termites are often considered the most financially destructive household pest due to hidden structural damage.

About the Instructor

Julie Marion brings a rare blend of 20 years in urban planning and 20 years as a real estate broker. That combination helps first-time buyers understand both the tangible math of value and the intangible neighborhood, planning, and future growth questions that often create homebuyer remorse.

The First Time Homebuyer Workshop gives buyers access to the one-on-one strategic system developed over decades so they can confidently buy a house or condo without making six-figure mistakes.

  Disclaimer: This content is intended to educate first time homebuyers and let you know there are options. Discussing the issues with the professionals you hire during your home buying journey is prudent. We are not recommending or advising you on your financial or legal situation

Let’s demolish homebuyer remorse together—one empowered buyer at a time.

 Julie Marion 

Founder of The First Time Homebuyer Workshop, homebuyer educator, Urban Planner, Freddie Mac Credit Counselor, Real Estate Broker, Podcast Host, You Tube Contributor.

www.TheFirstTimeHomebuyerWorkshop.com