
Have you been hearing scurrying sounds late at night? Or finding items with tiny gnaw marks? It might be rats or mice, but how can you be sure? Let’s quickly review the warning signs of a rodent infestation in your home.
What Are the Signs of a Rat or Mouse Infestation in Your Home?
- Rodent droppings: Small, dark droppings. Often near food sources.
- Gnaw or bite marks: Rodents will gnaw on anything – or gnaw through things to access food.
- Nesting material: Rodents build nests out of shredded paper, fabric, and other fibers.
- Unusual smells: Rodents have a strong, unpleasant musk that can be hard to miss.
- Footprints and tail trails: These can be difficult to find with the naked eye, but easy with a black light.
- Scratching noises: Scurrying or scratching sounds in the walls at night or early morning? It’s likely rodents.
Learn More About Rodent Warning Signs
This easy-to-read guide is intended to quickly show you how to spot a rodent problem in your home. For more information, be sure to check out our in-depth article on the topic:

