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A mouse problem behaves differently from a rat problem and needs a different response. Mice are small enough to use gaps that look like nothing, they do not need a permanent water source the way a rat does, and they nibble at many places rather than feeding heavily at one. That last habit is why a single bait station in the corner of a pantry rarely achieves much, and why successful mouse control uses many small placements along walls instead.

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Australia also has the mouse plague, which is a problem of a different order. In good seasons house mouse numbers in cropping districts can rise to the point where the ordinary advice about sealing a pantry becomes irrelevant, and the question turns into hygiene, food protection and clean-up. NSW Health has published guidance for households in exactly that situation.

One method has been taken off the table in part of the country, and it surprises people who have not bought a trap in a while. Victorian law now reaches this work through animal welfare rather than through pest regulation, and it has removed adhesive traps from the range of options available to households and to operators alike. Elsewhere the position is set jurisdiction by jurisdiction, so the first question to ask a technician is what they intend to use and why.

How a mouse problem announces itself

  • Small dark droppings shaped like rice grains, scattered rather than piled, in drawers and along shelf edges.
  • A sharp ammonia smell in a confined cupboard or a pantry that has been shut for a few days.
  • Packaging nibbled at a corner in several places rather than opened decisively in one.
  • Nests of shredded paper, insulation or fabric behind an appliance, in a drawer or in a stored box.
  • Light, fast scratching in a wall cavity or above a ceiling, usually starting shortly after dark.
  • Greasy smudges low on a skirting board where a mouse has run the same line repeatedly.
  • Food disappearing from a pet bowl overnight in a house with no other explanation for it.

Glue traps: prohibited in Victoria, and controversial everywhere

Victoria prohibits the sale and use of glue traps for trapping animals, and the prohibition explicitly extends to use by commercial pest control operators for rodent management. Insect glue traps remain available in Victoria only where they are incapable of trapping an animal, which in practice means they must have a cage or other protection that prevents any animal from contacting the adhesive surface.

The reasoning is about how the animal dies rather than about whether it dies. An animal caught on adhesive is not killed by the trap; it remains stuck, often for a long time, and frequently injures itself attempting to escape. That is the outcome Victorian law has moved to prevent.

Outside Victoria, glue traps are regulated under each jurisdiction's own animal welfare legislation, and the position is not the same everywhere. If you are outside Victoria, check your own state or territory's animal welfare requirements before buying or using one, and ask any operator you engage what they intend to use.

What actually works on mice, in order

  • Seal first: gaps around pipework, under doors, at weep holes and where the wall meets the roof all matter more than they look.
  • Remove the food supply, including pet food left down overnight, birdseed, and anything stored in a soft packet.
  • Set many placements rather than a few, close to walls and behind objects, because mice travel along edges.
  • Use traps where you want evidence and a body you can remove, particularly in a kitchen or a child's bedroom.
  • Where bait is used, it belongs in a secured, tamper-resistant station with a written record of every location.
  • Check daily at the start, because an unchecked trap is both ineffective and a welfare problem.
  • Clear out nesting material and clean the harbourage once activity stops, so a returning mouse finds nothing ready-made.

Autumn arrivals and the plague years

The ordinary suburban pattern is seasonal. As the weather cools, mice move from the garden, the shed and the compost into the building, so the number of calls climbs through autumn. That is also the most efficient time to do the proofing work, because the entry points are being actively used and are therefore easier to find.

Rural and regional Australia has a second pattern on top of that one. After good seasons in cropping districts, house mouse numbers can build to plague levels, and at that point the domestic advice changes shape: it becomes about protecting food, keeping mice out of bedding and clothing, and cleaning up droppings and carcasses safely rather than about clearing a single population out of a pantry. NSW Health publishes specific guidance for households during a mouse plague, and it is worth reading before the problem arrives rather than during it.

Cleaning up after mice without making yourself unwell

  • NSW Health advises wearing gloves when cleaning up after rodents, and wearing waterproof protective clothing and footwear.
  • Cover any cuts and abrasions with a waterproof dressing before you start.
  • Ideally, handling of mouse carcasses should be done by household members who are not pregnant or immunosuppressed.
  • Store food inside thick, well-sealed containers, and clean up spills and leftovers promptly so nothing is attracted back.
  • Avoid dry-sweeping heavy droppings in an enclosed roof space, which puts material into the air you are breathing.
  • Wash hands thoroughly afterwards, and launder clothing worn for the clean-up separately.

Keeping a mouse-proofed house mouse-proof

  • Re-check door seals annually, especially on a garage roller door and on any door that has been re-hung.
  • Keep stored boxes off the floor and away from walls in garages and sheds, so nothing has a quiet corner to nest in.
  • Do not leave pet food or water bowls out overnight, which is the single most common invitation in a suburban house.
  • Keep the space behind and under appliances clean, since that is the warmest and most private real estate in the kitchen.
  • Cut back climbing plants and overhanging branches that let animals reach the roofline.
  • Look in the roof void once a year with a torch, and treat fresh droppings as a reason to act rather than to wait.

Mice: frequently asked questions

Are glue traps legal in Australia?

It depends on the state. Victoria prohibits the sale and use of glue traps for trapping animals, including their use by commercial pest control operators for rodent management, and allows insect glue traps only where they are incapable of trapping an animal — they must have a cage or other protection preventing any animal from contacting the adhesive surface. Elsewhere in Australia the position is set by each jurisdiction's own animal welfare law and is not identical, so check where you live, and ask any operator you hire what they plan to use before they start.

How small a gap can a mouse use?

Much smaller than seems plausible, which is why proofing a house against mice is harder than proofing it against rats. The practical approach is not to measure but to work systematically: go around the outside looking at every service penetration, every weep hole, every vent, the gap under each external door, and the junction where the roof meets the wall, and then repeat the exercise inside the roof void with a torch on a bright day so daylight shows you the holes. Steel wool packed into a gap and sealed over is more durable than filler alone.

One trap has caught nothing in a week. Why?

Usually because there is only one, and it is in the wrong place. Mice travel along walls and behind objects rather than across open floors, and they feed in small amounts at many points rather than heavily at one, so a single trap in the middle of a pantry floor is unlikely to be on any route they use. Set several, tight against walls and behind appliances, with the trigger end toward the wall. Check them daily: an unchecked trap catches nothing useful and is a welfare problem as well.

What is the safe way to clean up mouse droppings?

NSW Health's guidance for households dealing with rodents is to wear gloves, to wear waterproof protective clothing and footwear, and to cover any cuts and abrasions with a waterproof dressing. It also advises that handling of mouse carcasses should ideally be done by household members who are not pregnant or immunosuppressed. Avoid dry-sweeping large accumulations in an enclosed space, store food in thick, well-sealed containers so nothing is drawn back, and wash thoroughly afterwards.

Will a mouse in the roof chew through wiring?

It is a genuine risk, and it is the reason a roof-void mouse problem is worth acting on rather than tolerating. Rodents gnaw to keep their incisors in check, and cable insulation, plastic conduit, irrigation line and the sheathing on data cable are all soft enough to be worth chewing. Damaged cable insulation in a roof space is an electrical hazard, so if you find chewed wiring, get a licensed electrician to look at it rather than inspecting or repairing it yourself.

Sources

  1. health.vic.gov.au: Glue traps for pest control
  2. NSW Health: Staying healthy during a mouse plague

Written by the LokalMatch editorial team. Last reviewed 22 September 2026. How we write and check our guides

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What affects the cost of mouse control

Prices depend on the details of your project. We only publish price ranges when they’re backed by real LokalMatch quote data or reliable sources. Until then, here’s what usually changes the price:

  • Type of pest or animal
  • How widespread the problem is
  • Size of the home and number of units affected
  • Treatment method
  • Number of follow-up visits
  • Exclusion work, such as sealing gaps or installing barriers

How to compare exterminators before you hire

  • Choose a company that inspects first and identifies the pest before recommending treatment.
  • Ask whether they are licensed to apply pest control products in your area.
  • For wildlife like raccoons, squirrels or birds, look for a company that uses humane removal and seals entry points.
  • Ask how they'll keep children, pets and food safe during and after treatment.
  • Get the treatment plan in writing, including follow-up visits and what happens if the problem comes back.

Questions to ask exterminators before you hire

  • What pest do you think this is, and how did you identify it?
  • Are you licensed to apply pest control products in my area?
  • What products or methods will you use, and are they safe around children and pets?
  • How do I need to prepare my home before treatment?
  • How many visits are included, and what happens if the problem comes back?
  • Will you seal entry points so the problem doesn't return?

When to call a pro for mouse control

  • Droppings, gnaw marks or scratching noises in walls or the attic
  • Bites or small blood spots on bedding that could point to bed bugs
  • A wasp or hornet nest near a door, deck or play area
  • An animal living in the attic, chimney or under a deck

Mouse control permits and local rules

Some mouse control work needs a permit or has to meet local bylaws. Rules vary by municipality, so ask your pro whether a permit is needed and who will apply for it — and check with your city or town if you’re unsure.

Permits and licensing

Seasonal maintenance

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