Rats vs Mice: How to Tell What's in Your Roof

The part most people get wrong

Most of the cost in dealing with rodents comes from doing it twice. Getting the identification and the source right the first time is what makes the difference between one treatment and a recurring expense.

So the sequence matters: identify, locate, treat the source, then close the conditions. Skip a step and you are paying again within weeks.

We set out the full process, timelines and warranty terms under the rodent control page.

What to look for

Before numbers become obvious there is almost always a quieter stage. What to look for:

• Scratching, gnawing or scurrying overhead in the roof space after dark.
• A persistent sharp ammonia smell in a pantry, roof void or under a sink.
• Greasy rub marks along a regular run between a gap and a food source.
• A pet fixated on one point of a wall, cupboard or appliance.
• Disturbed pet food, birdseed or compost overnight.

One of these on its own may mean nothing. Two or more in the same area is worth a professional look, and it is better not to disturb the site before someone has seen it.

If you are not certain which pest you are dealing with, everything we treat lists what we treat and the signs that point to each.

When rodents are worst in Sydney

Rodent calls across Sydney rise sharply in autumn, as cooling weather and shorter days push animals indoors to shelter and breed. Roof voids are the usual destination. Numbers persist through winter and drop over summer as food becomes available outside, which makes late summer the right time to proof a building before the move indoors begins.

That pattern is why timing a treatment well can do more than increasing the dose.

What you are paying for

The work is more methodical than most people expect, and very little of it involves a spray wand. The sequence:

1. Inspect and identify. Confirm the species, locate nests and harbourage, and note the conditions sustaining them.
2. Treat the source. Match the method to the species and place it in the harbourage rather than across open surfaces.
3. Allow the method to run. Expect a timeline rather than an instant result, and avoid adding anything of your own in the meantime.
4. Close the conditions. Identify and remove what caused it, otherwise the treatment is only a reset.

The work is logged, and if covered pests return inside the warranty period we come back at no charge.

There is a fuller explanation of what the treatment involves, including what is and is not included.

How to prepare for the visit

Nothing elaborate, but these few things genuinely affect how well it works:

• Clear a path to the roof void or subfloor access if there is one.
• Arrange for pets to be out of the way for a couple of hours.
• Put food, utensils and pet bowls away or in sealed containers.
• Cover or move fish tanks and turn off their air pumps.
• Vacuum carpets and hard floors, then empty the vacuum outside.

The main thing afterwards is not to clean the treated surfaces for about a week. That one habit undoes more treatments than anything else.

The safety question, answered properly

This is the most common question we get, and the answer is yes - with the important qualifier that it depends on correct application. The reasons it is safe:

• Fish tanks are covered and pet bowls and bedding moved before any treatment.
• Where a household has asthma, allergies or a newborn, the method is adjusted on request.
• Quantities are measured to the area rather than applied until the bottle is empty.
• You are given a specific re-entry time, usually just until treated surfaces are dry.

If anyone in the house has a specific sensitivity, tell us when you book - it changes which products we bring, not whether we can help.

You can see licensed and insured technicians and the qualifications behind the work.

Doing it yourself: the honest version

This is worth being straight about, because DIY is not always the wrong answer. It is the wrong answer once a population is established, for reasons that are fairly mechanical:

• Without identification there is no way to know whether it is working or just scattering.
• Repellent sprays can split colonies - with ants especially - turning one nest into several.
• Surface application misses the voids and cracks where the population actually lives.
• Guessing the species usually means the wrong product entirely.

If you have already tried something and it returned, that is the signal rather than a reason to try again harder.

The rest of what we handle is set out under the pest control services page.

Commercial and common-property situations

Once more than one occupier is involved, the job changes shape. The treatment may be similar; everything around it is not:

• Treatment of common property - risers, voids, bin rooms, roof spaces - not just individual lots.
• Coordination across multiple lots so the population cannot simply relocate.
• Food-safety alignment for kitchens, cafes and childcare premises.
• Scheduled servicing rather than reactive call-outs, with visit dates set in advance.
• Written service reports an auditor or committee can follow.

For a food business in particular, pest records are among the first things an inspector asks for - which makes the documentation as valuable as the treatment.

In a commercial kitchen the same problem becomes a compliance issue, and kitchen and food-area servicing covers the servicing and records involved.

Is this urgent?

A fair question, and the answer is genuinely "it depends". Move quickly if:

• It is a food business, childcare centre, medical premises or aged care.
• The species is one capable of a medically significant bite.
• You have found live termite activity in or against the building.
• Anyone in the household has a known allergy to stings.

Outside those, a booking in the next few days is generally fine. Waiting a month is where it starts getting more expensive.

If your suburb is not mentioned above, the suburbs on our run will confirm whether we are out that way.

What to check before you book

This is a licensed trade, so there are specific things you are entitled to ask:

• Confirm they hold current public liability insurance.
• For termite work, ask whether you receive a written timber pest report.
• Check whether a follow-up visit is included or charged separately.
• Ask for the technician's NSW pest management licence number, not just the company name.
• Ask which method they intend to use and why that one.

If someone will not put the quote or the warranty in writing, that is your answer.

That is worth checking before you book anyone, including us - who actually turns up covers our licensing, insurance and how long we have been doing this.

Keeping it gone

Treatment resets the problem. Prevention is what keeps it solved, and most of it is maintenance rather than pest control:

• Store food, birdseed and pet food in sealed hard containers.
• Fit door brush seals and repair damaged weep-hole screens.
• Pick up fallen fruit and turn compost often.
• Keep bins closed, clear of the wall and emptied regularly.
• Remove nesting cover such as stacked timber, pot piles and dense groundcover.

Even a couple of these makes a measurable difference, particularly anything involving moisture.

Households that would rather not think about it tend to move to an ongoing residential service, which catches problems at the point they are still small.

Questions we get asked