Signs of a Rat Infestation: Identifying the Problem Early

Rats can be quite a nuisance when they make themselves at home in places where they are unwanted. Not only are they a major health concern, but they can also wreak havoc on your property. In this blog, we will explore the common signs of a rat infestation that you should know. We’ll also delve into effective strategies for the removal of rats, ensuring your living environment remains safe and pest-free. 

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Common Signs of a Rat Infestation


Rat droppings are among the first things people notice when they suspect a rat infestation. These small, dark, and pellet-shaped droppings can be found where rats are active, such as kitchens, cupboards, basements, and garages. The size and shape of the droppings may vary depending on the rat species but are typically about the size of a grain of rice.

Gnaw Marks

Rats constantly need to gnaw to keep their teeth from growing too long. Consequently, they leave behind gnaw marks on various surfaces, including wooden furniture, electrical wires, and pipes. Look for these telltale signs of chewing damage as an indication of rat activity.

Squeaking or Scratching Noises

Rats are not known for their stealth, and they can often be heard scurrying, squeaking, or scratching in walls, ceilings, and crawl spaces. Suppose you hear these noises, especially when rats are most active at night. In that case, it indicates that you may have a rat infestation.

Grease Marks

Rats have oily fur, which can leave streaks or grease marks on walls and surfaces they frequently touch. These marks are often found along baseboards, near food sources, and rat travel routes. They may appear as dark streaks on walls, indicating the rats’ regular paths.


Rats emit a distinctive and unpleasant odor, especially in enclosed spaces with a significant infestation. The aroma is reminiscent of pee with a musky undertone. If you detect an unusual, persistent odor in your home, it’s worth investigating for a potential rat problem.

What to Do If You Suspect a Rat Infestation

If you suspect a rat infestation in your home or property, it’s essential to act swiftly. Avoid DIY methods, as rats can be challenging to deal with effectively. Instead, contact a certified exterminator who focuses on eliminating rodents. Prepare your property by clearing clutter, securing food sources, and sealing entry points before their arrival. Cooperate with the professional’s recommendations and follow-up visits as needed. Remain vigilant for any signs of rat activity after treatment to ensure a pest-free environment and protect your family’s health and property.


To keep one’s house safe and healthy, one must recognize the early warning signs of a rat infestation. Rats can transmit diseases, damage property, and multiply rapidly if left unchecked. If you spot any indications of a rat infestation, don’t hesitate to contact a reliable pest control company like Facility Pest Control. We can determine how bad the infestation is, put a plan in place to get rid of the rats for good, and even help you avoid having to deal with them again. Early intervention, with the assistance of experts like us, can save you time, money, and potential health hazards associated with a rat infestation.