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There is no exact science here, due to the nature of nests and how mice raise their young, but a good place to start is to inspect the droppings. A single mouse poops a lot, leaving around 50 droppings in a single day, likely near a primary food source. If you find only sporadic droppings, you likely have a small infestation. If you spot large mounds of droppings, you are dealing with a big problem.

The costs range from $300 to $2,500, depending on the severity of the infestation and the treatment method (heat, chemicals, or fumigation).

To determine if you have a rat or mouse infestation, look for several key differences. The most obvious is the size of the rodent: rats are significantly larger with thicker bodies, while mice are much smaller and more slender. You can also identify them by their droppings; rat droppings are larger and rounder, about the size of a raisin, while mouse droppings are smaller, like a grain of rice, and often have pointed ends. Other signs include the sounds they make, as rats produce louder scratching and gnawing noises due to their size. Behaviorally, rats tend to be more cautious, whereas mice are more curious and might be seen more often. Additionally, rat nests are typically larger than those of mice. If you are unable to see the pest or find clear evidence, a professional inspection can provide a definitive identification.

The main reason wolf spiders gravitate towards houses is the presence of their prey, including insects like flies and ants. Their attraction is also heightened by the availability of suitable shelter in areas cluttered or undisturbed and in moisture-rich environments like basements. Openings and gaps in the structure provide an easy access point for these spiders. During cold weather, wolf spiders may also seek warmth indoors, making your home an attractive refuge during harsh weather conditions.