Finding rats in a rental property is stressful for everyone. Tenants worry about their health and belongings, while landlords worry about repair costs and unhappy renters. The good news is that rats don’t turn up by chance. They follow food, warmth and easy access, and they use the same weak spots again and again.
Once you know where those weak spots are, a property inspection becomes much quicker and far more useful. This guide explains how rats get into rental homes and what landlords should check before a small problem becomes a costly one. If you’re researching rat pest control in Perth, or you simply want to prevent an issue, start with the points below.
Why Rental Properties Attract Rats
Rental homes often sit empty between tenants, or they’re lived in by people who don’t know the property’s quirks. Both situations give rats a chance to settle in unnoticed.
Perth’s mild climate helps them too. Rats can stay active for most of the year, so there’s rarely a quiet season. Warm roof spaces, leafy gardens and tidy suburban streets with plenty of bins make a comfortable setting for them.
Rats also look for three things: food, water and shelter. A leaking tap, a loose bin lid or a gap behind the stove can tick all three boxes at once.
Another factor is time. A tenant may only notice scratching sounds after several weeks, and by then the rats may already be nesting. Regular landlord checks help close that gap.
Gaps Around the Roof and Eaves
Roof rats are common across Perth, and as the name suggests, they love the roof space. They’re excellent climbers and will use trees, fences, power lines and pipes to reach the roofline.
From there, they look for any opening. Common problem areas include:
- Gaps where the roof tiles meet the walls
- Damaged or missing eave lining
- Loose ridge capping
- Unscreened roof vents
- Gaps around where pipes or cables pass through the ceiling
Rats can squeeze through openings of about 12 mm, which is smaller than most people expect. Mice can slip through gaps of around 6 mm.
When you inspect, look closely at the roofline from the ground, then check inside the roof cavity if it’s safe to do so. Look for torn insulation, droppings, gnaw marks and greasy rub marks along beams. Trim any branches that touch or hang over the roof, because they act like a bridge.
Ground-Level Entry Points
Not every rat comes from above. Brown rats and mice often enter at ground level, and they’re very good at finding tiny faults in a building.
Walk around the outside of the property and check the following:
- Gaps under garage doors and side gates
- Damaged weather strips on external doors
- Air vents and subfloor vents with missing or broken mesh
- Holes around plumbing, gas or air-conditioning pipes
- Cracks in the foundation or brickwork
Inside, check under kitchen and laundry sinks, behind the fridge and around the dishwasher. These areas are warm, quiet and often have small gaps where pipes enter the wall.
A simple fix, such as steel wool, metal mesh or a cement patch, usually works better than soft sealants. Rats chew through foam and plastic quickly, so use materials that can handle it. This is also the stage where mouse control in Perth often begins, since mice use the same small openings.
Outdoor Features That Invite Rodents
Sometimes the building is in fair condition, but the yard does the inviting. Rats are opportunists, so anything that offers food or cover can draw them closer to the home.
Here are a few common culprits:
- Overgrown shrubs and long grass near walls
- Stacked timber, pallets or building materials
- Fruit trees with fallen fruit left on the ground
- Compost bins that aren’t sealed
- Pet food stored in open containers
- Chicken coops or bird feeders with spilled feed
Rental properties are especially vulnerable here because tenants and landlords may each assume the other will handle garden upkeep. A quick note in the tenancy agreement or a friendly reminder can help.
During your inspection, check where the bins sit. Make sure the lids close firmly. Keep wood piles raised off the ground and away from the house. Cutting back dense plants gives rats fewer places to hide, which makes them less likely to move closer.
Signs Landlords and Property Managers Should Look For
You don’t need to see a rat to know one is around. Most infestations show up through small clues, and learning to spot them helps you act sooner.
Look out for:
- Dark, rice-shaped droppings along walls, in cupboards or in the roof space
- Chewed wires, pipes, packaging or timber
- Greasy smear marks along skirting boards and beams
- Nests made from shredded paper, fabric or insulation
- Scratching or scurrying noises at night
- A strong, musty smell or a sharp odour from a dead animal
Droppings are often the first clear sign. Fresh ones are dark and soft, while older ones look dry and grey.
Chewed electrical wiring deserves extra attention. It’s a genuine fire risk and a safety issue for tenants.
If you find any of these signs, take photos and keep notes with dates. Good records help when you’re talking to tenants, insurers or a pest professional. Calling for rodent removal in Perth early is usually simpler and cheaper than waiting for the damage to spread.
Landlord Responsibilities and When to Call a Professional
In Western Australia, the Residential Tenancies Act 1987 expects landlords to keep rental premises in a reasonable state of repair. Responsibility for pests can depend on the cause and the circumstances, so it’s wise to check the current guidance from Consumer Protection WA or seek independent advice if you’re unsure.
Whatever the legal details, a quick and practical response protects your property and your tenants. Rats can contaminate food, damage insulation and spread disease, so delays rarely help anyone.
Shop-bought traps and baits can reduce numbers briefly, but they rarely deal with the real cause. A trained technician will find the entry points, assess how serious the problem is and set up a safe treatment plan, especially when pets or children live in the home.
After treatment, seal the gaps and fix the access routes. Without that step, new rats often return within weeks.
Protect Your Rental with Expert Help
Rats are persistent, but they’re also predictable. Regular inspections, sound repairs and a tidy yard can stop most problems before they begin. If you’ve already spotted signs, it’s better to act today than hope they disappear.
Rats Pest Control Perth has more than a decade of local experience and is registered with the WA Department of Health. Our team provides honest advice, safe treatments and clear communication, whether you manage one rental or several. Call us on (08) 6275 6560 to book an inspection or ask a question.
We service Wanneroo, Ellenbrook, Morley, Canning Vale, Joondalup, Mandurah and nearby suburbs. For dependable rat pest control in Perth, we’re ready to help you protect your property and give your tenants peace of mind.