Mice and rats usually build nests out of clutter and discarded items, such as paper or cardboard products, scraps of cloth, trash, and insulation. They have the ability to squeeze into small spaces, so they may build their nests in places you might not even think possible. Rodents are omnivorous and will consume most kinds of human food (or even pet food) they can access. However, they will often target food items that contain nuts, seeds, grains, and fruits. These pests are social creatures, living in large colonies and families and giving birth to many young at a time in short periods of time, which has given rise to the adage that “you never have just one rodent.” While this saying may not always be true, it’s highly likely that if rodents are allowed to stay in your home, they will begin reproducing, further exacerbating the problem.
Rodent nests may be found in many out-of-the-way places, like inside walls, in unused rooms, and in basements or crawl spaces. Roof rats are also known to live higher up in attics and eaves. Also, since many rodents are nocturnal or active in the morning or evening, they’ll often forage for food sources during that time, especially since this is the time they’re least likely to be caught.