Signs of an Active Mice Infestation

November 21, 2017

Signs of an Active Mice Infestation

Mice are crafty critters that can enter houses through gaps and spaces in walls, floors, and foundations. Their body shape allows them to slip through the tiniest holes that would appear too small at first glance. This is why it’s imperative that you seal up spaces where critters can get in, including tears in window screens, gaps in the shingles, or cracks in the foundation.

Usually, homeowners aren’t aware there are mice in the home until signs of an infestation are present. Now that winter is approaching and the temperatures are consistently getting cooler, you may be wondering how you can keep an eye out for rodents. What types of things may indicate a problem?

If you believe that you have mice in your home, call Heritage Pest Control immediately. Traps are helpful for catching one or two stray mice, but they are not a resolution for an infestation. Also, mice can transmit harmful diseases (e.g. salmonella, hantavirus, rat-bite fever and the plague) to humans through their feces and saliva .

Below are signs that you have mice or rats living in your home.

Rodent Droppings

As droppings get older, they dry out and appear old and gray. However, new droppings are wet and dark. If you see signs of fresh droppings, you likely have a new or active infestation. The most common places to find droppings are where mice are nesting and feeding, as well as near food, drawers, and underneath sinks.

Foul Odor

An active infestation will eventually create a foul odor. This smell comes from droppings and urine that build up in one area. It’s a shame that humans don’t have a strong enough sense of smell to notice rodents right away but pets do! If you notice that your dog or cat is getting excited around a particular area, it could be that a mouse just got in. Let’s hope it’s a lost toy instead!


Rodents chew on everything. If they are around, you will notice bite marks on food packaging such as bags of chips or boxes of cereal. It’s also possible that the mice will chew on furniture or the structure of the home itself. One way to determine if you have mice or rats is by the size of the teeth marks.

Tracks and Nests

As the infestation grows, the presence of mice becomes more apparent, even if you don’t actually see them. For example, if you shine a blacklight at an angle over the affected areas, you may notice a track that is active with urine, smudges, and footprints. Nests are more hidden, but you can spot them in places such as attics, underneath stairs, and in the rafters. Nests are made from shredded newspaper, dried plants, and other scraps.

At the first sign of rodent activity, call Heritage Pest Control. Mice infestations are nothing to mess with, especially because rodents can carry harmful diseases that can be transmitted to you and your family. Our exclusion services are safe, humane, and effective, so call us today!