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Signs of a rat infestation

Have you heard scratching noises or come across small, dark brown droppings? If so, you could potentially have a rat infestation – but don’t worry, we're here to help. Rats are most active during the night, so it is often easier to spot the signs of a rat infestation than the actual rat. Below, we have explained the signs that could indicate that you have a potential rat problem. 

If any of the signs mentioned apply to your property, we recommend acting quickly and scheduling an inspection with us to ensure the potential infestation doesn’t spread any further. Rats can carry diseases such as hantavirus and leptospirosis, which can pose health risks. Our rat control services can help remove rats from your home and reduce potential health risks caused by rodents.

 

What to look for to identify signs of rats

Rats tend to hide during the day, which can make spotting them tricky. Instead, you’ll likely notice signs of rats before you see one. These telltale signs can include everything from noises in the walls to physical damage or rat droppings around your residential or commercial property. Below, we’ve broken down some of the common signs to help you figure out if you’re dealing with a rodent problem.

 

Rat droppings

Rodent droppings tend to be found concentrated in specific locations, as rats produce up to 40 droppings per night. The feces can spread disease, so it’s important to dispose of them safely. Our technicians can help.

Rub marks

Rats have terrible eyesight, so they use established routes along skirting boards and walls to help with navigation. Grease and dirt on their bodies leave smudges, oily grease marks, and dark marks on the objects and surfaces they repeatedly brush up against.

Scratching noises

Black rats are agile climbers, earning them their common name – the roof rat. Often found in attics, you may hear rat scratching noises at night. Brown rats can be identified by the grinding noise they make with their teeth. Squeaking noises can also indicate rats.

Rat holes

Rats often gnaw holes in baseboards, walls, or floors to move between nesting spots and food sources. These gaps show up near appliances, in corners, or behind furniture and are an early sign of rats in your home.

Rat nests

Rat nests can be found in lofts, attics, under eaves, and even in cavity walls. Rats will shred available materials such as loft insulation, cardboard, and use this shredded paper and other soft items to make nests.

Footprints

Rats leave foot and tail marks in dusty, less-used areas of buildings. To establish if an infestation is active, sprinkle fine flour or talc in the area near the footprints and check for fresh tracks the next day.

Gnaw marks

Rats have strong teeth and constantly gnaw on hard surfaces to keep them from growing too long. Look for chewing damage on wood, plastic, and even soft metals. These marks may appear near entry points, along baseboards, or around pipes, and can be a sign of an active rodent infestation.

 

Rat odor

A strong, musky smell around hidden spaces like lofts, wall cavities, or behind appliances can point to rats. This rat odor often comes from urine, droppings, or dead rats, and tends to grow stronger as the infestation worsens. If you notice a persistent, unpleasant smell, it's a good idea to investigate further or call us for a pest control inspection.

Rat burrows

Rat burrows are often found outside, but they can also appear near foundations or under decks. These tunnels lead to nests and often include multiple entry points. Burrows usually have smooth edges and may be near food sources or water sources, making them important signs of a rodent infestation. If you notice burrow holes, it’s a good idea to reach out to us for expert rodent control support.

Where to check for rats inside

Rats tend to stick to quiet, hidden areas where they can nest and find food. Here's where to look if you think rats may have made their way inside.

  • Lofts & attic spaces - Look for shredded loft insulation, chewed items, and rat droppings in corners and inside items like cardboard boxes.
  • Kitchens & laundry rooms - Look behind appliances like stoves, dishwashers, washing machines, and dryers, as rats are drawn to the heat they produce. 
  • Out of sight - Check crawlspaces, suspended ceilings, and even cavity walls.

Where to check for rats outside your property

Rats often move between indoor and outdoor spaces. Checking around your property can help spot signs early before they make their way inside.

  • Deck - Check the edges of decked areas for signs of damage from gnawing and burrowing.
  • Sheds - Look for rat holes (entrances to burrows) around the edges of sheds.
  • Garages - Check for gaps around door frames or holes gnawed at the bottom of wooden doors. If you have a garage, check around the internal door and any vents that could give entry into other internal areas.
  • Garbage cans - Garbage cans attract rats because they are warm and contain food. Check the lid and base of the bins for holes and gnaw marks.
  • Vegetation - Look for rat holes among tree and shrub roots in overgrown vegetation or nearby wasteland.
  • Drains - Check if drain covers are damaged or if there are holes dug next to the drain covers.

Worried about rats?

If you think you have rats, it is important to act quickly to control the level of infestation and reduce the health risks posed by these rodents. You can also take practical steps now to rat-proof your home or business and help prevent rats. We offer professional pest control services to help manage infestations and reduce risk. Our technicians are trained to reduce populations and prevent them from returning; it’s all part of our Integrated Pest Management (IPM) approach. Contact us today for a free inspection and we’ll take care of the rest.

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