Rats in an Apartment: What Renters Should Do

Seeing a rat in an apartment is different from finding one in a detached house.

In a multi-unit building, rats may move through:

• shared walls
• floor and ceiling voids
• plumbing chases
• utility penetrations
• basements
• garages
• trash areas
• courtyards
• service rooms
• neighboring structural spaces

That means the rat you see in your unit may be using a route that extends well beyond your apartment.

The best response is usually a combination of:

• documenting the activity
• protecting food
• cleaning safely
• using rat-sized traps where they can be monitored safely
• notifying property management
• inspecting accessible gaps
• coordinating building repairs and pest control

One rat sighting confirms that a rat was present.

It does not tell you how many rats are in the building or where the main route begins.

The practical goal is to determine:

1. where fresh rat activity is occurring
2. whether the route is limited to your unit or connected to shared building spaces
3. what food, water, or shelter supports the activity
4. which steps you can take safely as a renter
5. which repairs require management or qualified professionals
6. whether broader building-level control is needed

This guide explains what renters should do after finding rats in an apartment and how to reduce the chance of the problem continuing.

What Should You Do First If You See a Rat in Your Apartment?

Start with a simple response:

1. note where and when you saw the rat
2. check the immediate area for droppings, gnawing, or damaged food
3. secure accessible food
4. keep children and pets away from contaminated or trapping areas
5. notify your landlord or property manager through the normal building process

If your building uses a:

• maintenance portal
• management email
• pest-control request form
• building office
• emergency maintenance number

use the appropriate documented channel.

Keep a record of what you report and when.

Lease terms and local housing rules vary, so this page focuses on practical pest-control steps rather than legal advice.

Does One Rat in an Apartment Mean an Infestation?

Not necessarily.

One sighting tells you that at least one rat was present at that time.

It does not reveal:

• how many rats are in the building
• whether rats are nesting in your unit
• whether the route comes from another unit
• whether activity is centered in a basement, garage, trash area, or exterior burrow
• whether the rat entered only temporarily

Look for additional evidence.

Useful signs include:

• rat-sized droppings
• larger tracks
• heavy gnawing
• rub marks
• repeated sightings
• scratching or thumping
• damaged food packages
• nesting material

See Signs of Rats: How to Tell If You Have Rats.

Why Are Rats in Apartment Buildings?

Apartment buildings can provide connected routes and reliable resources.

Rats may find:

• food in units or trash areas
• water from leaks or drains
• basement shelter
• garage access
• wall cavities
• utility chases
• exterior gaps
• protected courtyards

A structural opening in one part of the building can allow rats to move toward several units.

Treating only the visible rat may not solve the underlying route.

Can Rats Move Between Apartments?

Yes.

Rats can move through connected structural spaces.

Possible routes include:

• plumbing chases
• gaps around pipes
• wall cavities
• floor openings
• ceiling voids
• utility shafts
• basement-to-wall routes

However, do not assume a specific neighboring unit caused the problem.

The original source may be:

• an exterior opening
• a basement
• a garage
• a trash room
• a loading or service area
• another shared building route

Are Rats in Apartments Different From Mice?

Yes.

Rat evidence is usually larger.

Compared with mouse activity, rats generally leave:

• larger droppings
• larger tracks
• broader gnaw marks
• heavier rub marks
• larger body impressions
• more substantial nesting material

Rat traps also need to be larger and stronger than mouse traps.

See Rat vs Mouse: How to Tell the Difference and Mice in an Apartment: What Renters Should Do.

Where Do Rats Hide in Apartments?

Possible hiding and travel areas include:

• behind large appliances
• under sinks
• inside lower cabinet voids
• along baseboards
• utility closets
• wall cavities
• ceiling voids
• pipe chases
• areas near balcony or patio doors

Because rats are larger than mice, they usually need larger openings.

A tiny mouse-sized crack may not explain rat activity.

Rats in an Apartment Kitchen

Kitchens can provide:

• food
• crumbs
• grease
• water
• appliance cover
• cabinet routes

Inspect:

• under the sink
• behind accessible appliances
• pantry edges
• lower cabinets
• trash storage
• pipe penetrations

See Rats in the Kitchen: Why They’re There & What to Do.

Rats Under the Kitchen Sink

Sink cabinets often contain:

• drain pipes
• water lines
• dishwasher lines
• wall penetrations

Look for:

• rat droppings
• heavier gnawing
• rub marks
• a visibly oversized opening

Do not disconnect plumbing to investigate.

Report structural openings that need permanent repair.

Rats Behind Appliances

Large appliances can provide:

• cover
• heat
• protected wall edges
• food debris

Do not pull out:

• a heavy refrigerator
• a stove
• a built-in appliance

if it cannot be moved safely.

Do not remove appliance service panels unless qualified.

Focus on accessible evidence around the appliance.

Rats in Apartment Walls

Shared walls can conceal rat movement.

Possible signs include:

• heavier scratching
• gnawing
• rub marks near openings
• droppings near wall-floor gaps
• activity around utility penetrations

Do not cut open drywall as a first response.

See Rats in Walls: Signs, Entry Points & What to Do.

Rats in Apartment Ceilings

Rats may move through:

• ceiling voids
• floor cavities above
• utility chases
• attic-like service areas

Heavier movement may sound like:

• scratching
• scurrying
• gnawing
• occasional thumps

But sound alone does not prove rats.

See Rats in the Ceiling: Signs, Sounds & Removal.

Rats Near Apartment Air Vents

A rat near a vent may be:

• around the duct boot
• in a wall cavity
• above the ceiling
• below the floor

It is not automatically inside the duct.

Do not place:

• traps
• loose bait
• poison
• mesh
• foam
• disinfectant

inside active supply or return airflow paths.

Do not block required HVAC ventilation.

See Rats in Air Vents: How They Get There & What to Do.

Can Rats Come From an Apartment Basement?

Yes.

Basements may contain:

• utilities
• storage
• trash
• mechanical rooms
• laundry areas
• foundation openings

Rats can move upward through connected walls and pipe chases.

See Rats in the Basement: Why They’re There & What to Do.

Can Rats Come From an Apartment Garage?

Yes.

Parking garages and attached garages can provide:

• door gaps
• utility routes
• storage
• trash access
• wall connections

Rats may move from garage-level areas into higher structural routes.

See Rats in the Garage: Entry Points, Nests & Control.

What Do Rat Droppings in an Apartment Look Like?

Rat droppings are much larger than mouse droppings.

Common apartment locations include:

• cabinet corners
• behind appliances
• under sinks
• pantry edges
• utility closets
• near trash areas

Do not use dropping count to estimate rat population.

See Rat Droppings: What They Look Like & What They Mean.

Rat Gnaw Marks in an Apartment

Rats may gnaw:

• food packaging
• cardboard
• cabinet material
• baseboards
• plastic
• wire insulation

Rat gnaw marks are generally broader and heavier than mouse gnawing.

See Rat Gnaw Marks: How to Identify Rodent Damage.

Rat Tracks in an Apartment

Tracks may appear in:

• dust
• utility closets
• storage areas
• behind large appliances
• basement-adjacent spaces

Rat tracks are larger than mouse tracks.

See Rat Tracks: What They Look Like & Where to Find Them.

Rat Rub Marks in an Apartment

Repeated rat movement may leave dark greasy-looking marks along:

• baseboards
• pipe routes
• utility gaps
• wall edges

Do not identify rats from a dark stain alone.

Dust, moisture, grease, and ordinary wear can look similar.

Rub marks are more useful when combined with droppings or tracks.

Rat Nest in an Apartment

A rat nest may contain:

• shredded paper
• cardboard
• fabric
• insulation
• soft debris

Possible locations include:

• hidden cabinet voids
• wall cavities
• utility spaces
• inaccessible service areas

Seeing a rat does not prove a nest is inside your unit.

See Rat Nests: What They Look Like & Where to Find Them.

Rat Urine Smell in an Apartment

Repeated rat activity can create a strong musky or urine-like odor.

But odor alone does not prove rats.

Other sources can include:

• drains
• garbage
• moisture
• mold
• other pests

See Rat Urine Smell: What It Smells Like & What It Means.

Does Seeing a Rat During the Day Mean the Apartment Has a Severe Infestation?

Not automatically.

Daytime activity can occur because of:

• disturbance
• food availability
• competition
• normal movement

A daytime sighting is important evidence, but it does not measure population size.

See Seeing a Rat During the Day: What It Means.

How to Document a Rat Problem for Property Management

Keep the record factual.

Document:

• date
• time
• room
• sighting location
• droppings
• gnawing
• damaged food
• scratching or thumping
• rub marks
• visible structural gaps

Photos can be useful when they clearly show:

• rat droppings
• gnawing
• a pipe gap
• damaged food packaging
• a baseboard or wall opening

Avoid guessing how many rats are present.

Report what you actually observed.

What Should You Tell Your Landlord or Property Manager?

A useful report can include:

• where the rat was seen
• where fresh evidence appears
• whether food was damaged
• whether there is a visible gap
• whether activity happened more than once
• whether sounds occur in walls or ceilings

Ask for appropriate:

• inspection
• pest-control service
• building repair

The exact maintenance process depends on the building, lease, and local rules.

Should You Report One Rat?

Yes, early reporting can be useful in a multi-unit building.

A confirmed rat may reveal a route involving:

• a basement
• a garage
• a trash area
• a utility chase
• an exterior building gap

Management may be able to inspect areas outside your unit that you cannot access.

Can Renters Fix Rat Holes Themselves?

Small temporary renter-safe measures may sometimes be appropriate.

But permanent repairs may involve:

• shared walls
• plumbing
• electrical systems
• HVAC
• fire-rated assemblies
• doors
• common areas

Do not make permanent building alterations unless authorized.

Document visible gaps and report them.

Should You Fill Pipe Gaps Yourself?

Do not interfere with:

• plumbing movement
• shutoff valves
• electrical systems
• fire stopping
• ventilation
• required service access

A large utility gap may need a proper building repair.

Report it rather than improvising around unfamiliar building systems.

Should You Seal a Rat Entry Point Immediately?

Not always.

If rats are already inside a shared wall or unit and the only active route is sealed, they may:

• move into another room
• enter another unit
• gnaw another opening
• die in an inaccessible void

Removal, monitoring, and exclusion should be coordinated.

See Rodent Exclusion: How to Keep Rats & Mice Out.

What Food Should Renters Protect?

Store vulnerable food in sturdy containers.

Pay attention to:

• cereal
• rice
• pasta
• flour
• snacks
• pet food
• bird seed
• bulk dry goods

Clean:

• crumbs
• grease
• spilled dry food
• food under accessible appliances

Do not leave damaged food packages available.

What About Pet Food?

Pet food can attract rats.

If practical:

• feed on a schedule
• remove leftovers
• clean spilled kibble
• store bulk food securely

Keep rat traps and pest-control products inaccessible to pets.

What About Trash?

Use a container with a functioning lid when practical.

Clean spills around:

• trash cans
• recycling
• food-waste containers

If shared trash areas show rat activity, report that condition to building management.

Should You Use Rat Traps in an Apartment?

Rat-sized traps may be useful when they can be placed safely on confirmed routes.

Possible locations include:

• along baseboards
• beside lower cabinets
• behind an accessible large appliance
• near a confirmed wall or pipe route

Rat traps are stronger than mouse traps.

Keep them:

• stable
• accessible for checking
• away from children
• away from pets

See Rat Traps: Types, Placement & How to Use Them and Best Rat Traps: Which Type Works Best & How to Choose.

Where Should You Put Rat Traps in an Apartment?

Place traps where fresh evidence is strongest.

Follow protected routes such as:

• wall edges
• cabinet edges
• appliance edges

Do not place powerful rat traps:

• in the middle of a room
• inside vents
• inside appliance machinery
• inside electrical spaces
• where children or pets can reach them
• where they cannot be retrieved

A protected trap setup may be more appropriate in some households.

How Many Rat Traps Should You Use?

Trap count depends on:

• how many confirmed routes exist
• how large the apartment is
• where activity occurs

Do not use trap count to estimate how many rats are present.

Cover the actual routes and monitor consistently.

Should Renters Use Rat Poison?

Do not scatter loose rodenticide in an apartment.

Rodenticides must be used according to:

• the product label
• placement requirements
• child and pet safety requirements
• building rules

A poisoned rat may die inside:

• a wall
• a ceiling
• a cabinet void
• another inaccessible shared cavity

and create an odor problem.

In multi-unit buildings, isolated poison placement in one unit may also fail to address the building route.

Can You Use an Ultrasonic Repellent for Rats?

Do not rely on an ultrasonic device as the primary solution.

The important control steps remain:

• food protection
• monitored rat trapping
• structural inspection
• building repairs
• exclusion

A device does not close a basement opening or shared utility chase.

How to Clean Rat Droppings in an Apartment Safely

For a small accessible contaminated area:

1. keep children and pets away
2. wear suitable gloves
3. avoid dry sweeping or vacuuming
4. wet droppings and the nearby hard surface with an appropriate disinfecting solution
5. allow the product’s required contact time
6. wipe or collect the waste
7. bag it appropriately
8. clean the surrounding hard surface
9. wash hands after removing gloves

Do not dry sweep or vacuum fresh rat droppings or nesting material before wet cleanup.

See the cleanup section and rodent safety section.

What If Rat Droppings Keep Returning?

Fresh droppings after cleanup suggest continued activity.

Document:

• where they reappear
• how quickly they return
• whether traps show activity
• whether new gaps or gnawing appear

Report recurring evidence.

Repeated cleanup alone does not correct an active shared route.

What If Rats Are in Several Apartments?

That usually suggests the building needs a broader inspection.

Possible shared sources include:

• exterior openings
• basement routes
• garages
• utility chases
• trash areas
• common walls

Do not assume one tenant caused the problem.

Building-level control may require coordination between:

• property management
• maintenance
• pest-control professionals

What If the Neighbor Has Rats?

You may suspect a neighboring unit if activity occurs along a shared wall.

But the source usually cannot be confirmed from your unit alone.

Focus on:

• evidence in your apartment
• food protection
• safe trap monitoring
• reporting shared structural gaps

Let management inspect common routes.

Can Rats Enter From a Hallway?

Yes.

Rats may use:

• door gaps
• corridor edges
• service areas
• utility spaces

Check your apartment entry for obvious gaps.

Do not alter:

• fire-rated doors
• closers
• thresholds
• common corridor systems

without authorization.

Can Rats Come Through Heating or Plumbing Openings?

They can use gaps around:

• radiator lines
• heating pipes
• drains
• water lines

The rat travels through the structural opening around the utility, not through a closed water pipe.

Do not alter heating or plumbing systems.

Report oversized penetrations.

Can Rats Enter Through Apartment Door Gaps?

A sufficiently large damaged gap may become a route.

Inspect:

• bottom door clearance
• damaged trim
• broken thresholds

Repairs must preserve:

• safe door operation
• fire protection where applicable
• building requirements

Permanent changes may require management.

What If You Rent With Children or Pets?

Rat trap and bait safety is especially important.

Keep traps:

• inaccessible to children
• inaccessible to pets
• away from play areas
• away from food preparation surfaces

Do not use loose rodenticide.

If safe trap placement is difficult, ask management or a pest-control professional for an appropriate protected setup.

When Should Renters Ask for Professional Rat Control?

Professional service may make sense when:

• sightings continue
• droppings keep returning
• rats are active in walls or ceilings
• several units may be affected
• the route cannot be identified
• safe trap placement is difficult
• traps do not reduce activity
• structural repair is needed
• inaccessible contamination is present
• children or pets make DIY control difficult

See Rat Exterminator: What to Expect & When to Call One.

What Can a Pest-Control Professional Check in an Apartment Building?

A professional may inspect:

• rat travel routes
• droppings
• rub marks
• gnawing
• trap placement
• utility penetrations
• shared structural routes
• common areas

Building maintenance may still be needed for:

• wall repairs
• pipe gaps
• door repairs
• vent repairs
• structural exclusion

Pest control and building repair often need to work together.

How to Know Whether the Rat Problem Is Improving

Monitor for:

• no new droppings
• no new gnawing
• no trap activity
• no repeated sightings
• no new rub marks
• no continuing wall or ceiling activity
• no new odor

One quiet night is not proof that the rats are gone.

Look for the absence of fresh evidence over time.

What If the Rats Come Back?

Recurring activity usually means one or more conditions remain unresolved:

• exterior building entry
• shared wall route
• utility penetration
• basement or garage source
• trash-area source
• food access
• damaged door or structural opening

Document the recurrence and report it.

The long-term solution depends on correcting the route, not only catching the rat you can see.

Rats in an Apartment: The Bottom Line

Apartment rat problems can be complicated because rats may move through shared building spaces.

If you find rats in an apartment:

• document sightings and fresh evidence
• notify property management through the normal documented channel
• protect food and pet food
• clean spills and damaged food
• use rat-sized traps only on safe accessible routes
• keep powerful traps and pest-control products away from children and pets
• wet-clean droppings safely
• do not open walls, vents, electrical systems, plumbing chases, or appliance internals
• report shared structural gaps
• coordinate trapping with building repairs and exclusion
• monitor until fresh evidence stops

One rat does not automatically mean a large infestation.

The important question is whether the building still provides an active route.

Continue with our signs of rats guide, rat droppings guide, rats in the kitchen guide, rats in walls guide, rats in the ceiling guide, rat traps guide, how to get rid of rats, how rats get into a house, or rodent exclusion guide.

For the broader overview, return to [Rats & Mice in the Home](/).