Mouse Activity in Your Home?
Mice can enter buildings through very small openings and establish themselves in roof spaces, wall cavities and other protected areas of a property. If you're hearing movement, finding droppings or seeing other signs of activity, the important first step is understanding what is actually causing the problem and how it is using the building. The Possum Man takes a diagnostic approach to mouse control—looking at the evidence, potential access opportunities and conditions around the property before determining the appropriate solution.
Pricing & booking
Initial inspection / call-out
$382 incl GSTTreatment pricing confirmed after inspection.
Book an InspectionSigns You May Have Mice
Mouse activity can present in different ways depending on where the animals are moving or nesting. If you think you have mice in your roof, noise alone doesn't confirm it — rats and possums can also create sounds within roofs and wall cavities. The time, location, type and pattern of activity all help build a clearer picture of what may be occurring.
Small droppings
Small, dark droppings concentrated in particular areas are one of the most common signs of mouse activity. Their size and location help distinguish them from rats — but only an inspection confirms which is responsible.
Scratching or movement within walls or ceilings
Light, fast movement after dark is typical of mice, but it can also be rats or another cause entirely. The weight, timing and location help separate them — only an inspection confirms what's actually present.
Gnawing, disturbed food or nesting material
Chewed food packaging, gnawed timber or wiring, disturbed food and nesting material all point to established rodent movement. Activity around kitchens, cupboards, storage areas, garages and the roof space can all be relevant.
How Mice Get Into Buildings
Mice require much smaller access opportunities than possums or rats. Potential access can occur through gaps and defects around the building perimeter, wall cavities, roof and eave areas, penetrations for pipes, cables and services, doors and other openings, under-building areas and other construction gaps or defects. Once inside the structure, mice may move between wall cavities, ceilings and other protected areas — which means the location where you hear a mouse is not necessarily the location where it entered the building.
Building perimeter gaps
Gaps and defects around the external building perimeter are common access opportunities for mice, who can squeeze through very small openings.
Wall cavities & service penetrations
Mice move between wall cavities, ceilings and concealed areas. Penetrations for pipes, cables and services provide routes that would be impossible for a rat or possum.
Roof, eave & under-building areas
Roof and eave areas, doors, other openings and under-building areas can all provide access. Construction gaps or defects throughout the structure are potential entry points.
Because mice can use very small openings, the location where you hear a mouse is not necessarily the location where it entered the building.
Why Mice Stay
A building can provide mice with the three things they need: shelter, access and food opportunities. Roof spaces, wall cavities and concealed areas can provide protected habitat, while food and water may be available elsewhere within or around the property. Simply seeing or hearing a mouse does not tell us how extensive the activity is or where access is occurring — which is why effective control needs to consider the building and surrounding conditions, not just the individual mouse.
Shelter in concealed areas
Roof spaces, wall cavities and other protected areas provide the habitat mice need to establish themselves within a property.
Access through small openings
Mice can use openings far smaller than those required by rats or possums, meaning more potential entry points exist across the building.
Food and water opportunities
Food and water available within or around the property sustain activity. Effective control considers these conditions, not just the individual mouse.
Our Mouse Control Approach
The Possum Man uses a systematic diagnostic process. Rather than diagnosing the problem from one sound, we consider the overall pattern — looking at the evidence, potential access opportunities and conditions around the property before determining the appropriate solution.
- Step 1
Listen
We start with what you have experienced. Where is the activity occurring? What does it sound like? When does it happen? What other signs have you noticed?
- Step 2
Interpret
We consider whether the reported activity is consistent with mice or whether rats, possums or another explanation needs to be considered.
- Step 3
Investigate
Where an inspection is required, we assess the relevant areas of the property for evidence of rodent activity and potential access opportunities. This can include the internal roof space, external building perimeter and roof where appropriate.
- Step 4
Correlate
The evidence is considered together. Droppings, gnawing, movement patterns, possible access routes and building conditions are more useful when interpreted collectively than when any one sign is considered in isolation.
- Step 5
Diagnose
We determine the most likely cause of the activity and the factors supporting it.
- Step 6
Resolve
The appropriate control strategy can then be recommended based on what has actually been identified.
Mouse Control, Baiting & Proofing
Following diagnosis, the appropriate control strategy is recommended based on what has actually been identified. Baiting should not be viewed in isolation — where access opportunities or other contributing conditions are identified, these may also need to be addressed as part of longer-term rodent management. Rodent populations are not static, which means ongoing monitoring can also be important where surrounding rodent pressure remains.
- Step 1
Mouse control and baiting
Where appropriate, rodent baiting may form part of the control strategy. The location and method used will depend on the circumstances identified at the property. Baiting should not be viewed in isolation — where access opportunities or other contributing conditions are identified, these may also need to be addressed.
- Step 2
Mouse proofing and prevention
Where practical, reducing access opportunities can help reduce the likelihood of future mouse activity. Because mice can use very small openings, proofing requires careful consideration of the building rather than simply sealing the first visible gap. Potential measures will depend on the property and may include addressing construction gaps, service penetrations, openings around the building perimeter, accessible wall or roof cavities and other identified access opportunities.
- Step 3
Recommendations based on what's found
Proofing recommendations should be based on what is actually found at the property. Because rodent populations are not static, ongoing monitoring can also be important where surrounding rodent pressure remains.
Mice, Rats or Possums?
Customers frequently know that something is in the roof without knowing what it is. That is completely understandable. Different animals can produce similar sounds depending on the surface they are moving across, where they are within the structure and what they are doing. Rather than diagnosing the problem from one sound, we consider the overall pattern. These are indicators rather than absolute rules — if you're uncertain, Ask Kate can help work through what you're experiencing.
What Happens After Mouse Control?
The result and follow-up required depend on the type and extent of activity identified and the control method used. If rodent bait stations form part of your treatment, monitoring and bait replacement may be required depending on consumption and ongoing activity. Our Rodent Control — What to Expect guide explains what happens after bait stations are installed, when they should be checked and what to do if activity continues.
Read Rodent Control — What to Expect
What happens after bait stations are installed, when they should be checked and what to do if activity continues.
Read articleRats vs Mice: How to Tell the Difference
How rats and mice differ in behaviour, access and control — and why treating them the same fails.
Read articleWhy Rats Keep Coming Back: Understanding Access to Your Home
Why rodents keep coming back when the entry routes are never found — and how exclusion breaks the cycle.
Read articleNot Sure What You're Hearing?
Ask Kate can help work through the where, what and when of the activity you're experiencing and help identify the appropriate next step. She draws on the same specialist knowledge as our inspectors, so the guidance you get is consistent with everything on this site.
Ask Kate about the droppings you've found, the scratching you're hearing, and whether it's likely mice, rats or something else. If you're uncertain, Ask Kate can help work through what you're experiencing.
Booking remains the fastest way to get a confirmed diagnosis — Kate is here to help you get there with confidence.
Need Help With Mouse Activity?
If you think you may have mice—or you're not sure whether the activity is mice, rats or a possum—we can help you work through it. You don't need a diagnosis — that's what the inspection is for. We'll listen, investigate, diagnose and explain, then you decide what to do next.
No pressure, no assumptions — just an evidence-based diagnosis and a clear recommendation. You stay in control the whole way.