We're Here to Assist You

Mice & Rats: How Rodents Find Their Way Into Sydney Properties

Category: Holiday

Published: June 2026

By: Ryan — Owner of Bugz Pest Control

What We Walked Into

June is usually when rodent activity starts becoming more noticeable around properties. As the weather cools, mice and rats often begin looking for warmer, sheltered spaces where they can find food, water and somewhere to nest.

A few days ago, I attended a property where the owner had started hearing scratching sounds in the roof space at night.

At first, they thought the noise might have been coming from outside, but after finding small droppings near the garage and noticing damage around stored items, they decided it was time to have the property checked properly.

When I arrived, the owner told me the scratching was usually heard late at night, but they had not seen a rodent in the house.

With rodents, that is very common. You may not always see a mouse or rat running across the floor, but the signs around the property can tell us where they are moving.

The Problem

During the inspection, I found signs that rodents had been active around the garage and roof space.

There were fresh droppings near stored items, light gnaw marks around packaging and a small gap near an exterior access point.

The scratching had started because the rodents were moving through quiet, concealed areas.

Once mice or rats gain access, they may move through roof voids, wall cavities, garages, storage areas, kitchens and other hidden parts of the property.

The main issue is not only the rodent you may see. It is the entry point, nesting area, food availability and protection from colder weather that allow the activity to continue.

In this case, those conditions made the property more attractive to rodents, especially as the weather changed.

The Process

I began by inspecting the areas where the owner had noticed sounds, droppings and damage.

I checked the garage, roof space, exterior walls, door gaps, vents, utility openings, storage areas and nearby landscaping.

I also looked for rub marks, gnawing, nesting material, droppings, odours and possible access points.

Once I understood how the rodents were moving through the property, I explained the likely entry areas and showed the owner what signs were telling the story.

The service plan focused on the affected spaces, while the prevention advice focused on reducing future access.

Rodent control works best when the current activity and the property conditions are addressed together. Simply dealing with the rodent activity may not be enough if the same gaps, food availability and shelter remain.

The Outcome

After the service, the scratching sounds reduced and the owner had a clearer understanding of what had been happening around the property.

The owner also knew where to keep checking for future signs, including fresh droppings, gnaw marks, new noises and activity near storage areas.

The most important result was that we addressed more than just the visible signs. We looked at where the rodents were likely getting in and what could be done to help prevent the problem from returning.

That clarity makes a big difference. When you understand where the activity is coming from, it becomes much easier to keep an eye on the right areas moving forward.

DIY Advice

There are several practical things you can do around your property to help reduce the risk of mice and rats entering.

Keep food, pet food, bird seed and dry goods stored in sealed containers.

Keep bins closed and avoid leaving accessible food scraps, packaging or rubbish around storage areas.

Try to reduce clutter in roof spaces, garages and storerooms. Cardboard boxes, fabric, paper and unused items can provide nesting materials and hiding spaces.

Check exterior doors, garage doors, vents, roof gaps, utility openings and gaps around pipes. Even a small opening may be enough for rodents to enter.

It also helps to keep grass, shrubs and dense vegetation away from the property, especially where they touch rooflines or exterior walls.

If you hear scratching or notice droppings, do not wait too long before checking the area. Rodent activity can become more difficult to manage once nesting is established.

"It's brighter than before!"

— Megan

Professional Insight

One thing I have learned from rodent inspections is that the noise you hear is usually only one part of the problem.

Scratching sounds at night may suggest movement inside walls, ceilings or roof spaces.

Fresh droppings can indicate recent activity, especially when they continue appearing in the same location.

Gnaw marks around food packaging, timber, plastic or wiring are another sign that rodents may be active nearby.

A mouse or rat can develop a regular travel path around your property if the conditions are right. Damaged insulation or nesting material in roof spaces or garages may also point to a longer-term problem.

One of the biggest mistakes property owners make is only setting traps while leaving entry points open. If rodents can still enter the property, the problem may continue or return.

Closing Thoughts

If you are hearing scratching at night, finding droppings or noticing chew marks around your property, it is better to investigate early.

A scratching sound in the roof space, garage or wall cavity can be the first sign that rodents have found a way in.

For homes and businesses across Greater Sydney, Bugz Pest Control can help you inspect the area, understand what is happening and recommend practical steps to reduce rodent activity.

Thanks for reading,