Pests are not only attracted to your home because of uncleanliness, they can be attracted to the inside of your home because of many reasons, the most common being that their natural environment has been compromised, hence they may find your home more hospitable than their current environment. During winter, rodents often seek warmth, food and nesting which a house will ideally provide for them. As clean as your home or business may be, it is will not remain pests free from those seeking a warm and well stocked refuge.