How do I get rid of rats in my roof?
Place secure bait stations or traps in the roof void and along the routes rats use to reach it, then find and seal the entry points, usually gaps at the roof line, eaves, vents and where pipes or cables enter. Trim trees and vines that touch the roof so rats cannot climb back in.
Signs you have rats
- Heavy thumping or running in the roof, especially after dark
- Droppings 1–2 cm long in the roof, garage or shed
- Gnawed timber, wiring, irrigation or fruit
- Dark greasy rub marks along beams and walls
- Burrows under sheds, compost bins or along fence lines
Why rats need fast action
Rats gnaw to keep their teeth worn down, and electrical cables in roof voids are a common target, which creates a fire risk. They contaminate food and surfaces, can spread diseases such as leptospirosis and salmonellosis, and breed several litters a year. The sooner they are dealt with, the less damage there is to repair.
How Pestor treats rats
Inspect
We check the roof void, sub-floor, garden and outbuildings to identify the species, nests and entry points.
Remove
Secure bait stations and traps are placed in the roof and along runways, out of reach of pets and children.
Proof
We seal or flag entry points at the roof line, eaves, vents and service penetrations.
Monitor
We check activity and stations on follow-up visits until rats are gone.
Before your rat treatment
- Make sure the manhole to the roof void is clear and accessible
- Clear access to the sub-floor and around sheds
- Pick up fallen fruit and secure compost bins
- Tell us about pets, chickens and any wildlife you see in the garden
Prevention tips
- Cut back branches and vines that touch the roof
- Use enclosed compost bins and secure chicken feed
- Pick up fallen fruit and nuts daily
- Store firewood and timber off the ground and away from walls
- Repair broken vent covers and roof tiles
Common species in Melbourne
| Name | Scientific name | What to know |
|---|---|---|
| Black rat (roof rat) | Rattus rattus | Slim with a tail longer than its body. Climbs well and nests in roofs and trees. |
| Norway rat (brown rat) | Rattus norvegicus | Heavier with a shorter tail. Burrows under buildings and along drains, common in commercial sites. |
FAQs about rats
How do I know if I have rats or possums in the roof?
Rats make quick scurrying and gnawing sounds and leave small droppings. Possums are much heavier, thump loudly, and are usually most active soon after dusk. Possums are protected in Victoria and need different handling, so tell us what you are hearing and we will help you work out which it is.
Are rat baits safe for my dog?
We use lockable bait stations placed out of reach and talk through your pets before we start. In high-risk areas we use traps instead of bait.
How long does rat control take?
Most homes see activity drop within one to three weeks. Sealing entry points stops new rats moving in.
Do rats come back after treatment?
They can if entry points stay open and food is available outside. Proofing and removing food sources is what keeps them out.