A mouse nest is often made of a variety of materials and objects that are soft and comfortable.  It is common for mice to chew into a mattress, pillow, or carpet in search of nesting materials.  Paper towels, rags, or even dropped feathers from a house pet can be ideal for a mouse nest.  These materials provided needed warmth and comfort for mice to reproduce and care for their young.  They transport these materials to remote locations and build a soft environment for their home.  These hidden places in the home are located where a source of warmth is provided.  They may be found behind a stove or behind appliances with a pilot light.  The back of a refrigerator near the warm motor is also common.  Signs of mice to look for include: mouse droppings, dirty smudges, ammonia-like smells, shredded material, and scratching noises.  Mice multiply at alarming rates, so early detection of problems is very important.  Untreated problems will result in damaged furniture, appliances, food storage, and cabinetry.  Developing young will chew into cords and wires resulting in damaged appliances.  They continually search for food on countertops, shelves, and cabinets.  They have to capability to spoil all the food in a home.  Appliances where the nest is located need to be removed and examined.  The entire nest needs to be moved from the area and disposed of.  Mousetraps with bait should be placed near the problem area (near the mouse nest can be effective).  This will assure that as mice return to establish a new nest, they will not be welcomed.  To help prevent mice from returning to live in your home, secure all food storage areas and seal all gaps and holes that lead to your appliances.