What are the most common signs of pest infestation?

Unwanted pests living in your home or business may not be noticed right away, but will invariably leave evidence of their presence at some point. Different pests leave different clues, but the most common clues to look for are droppings from mice and rats, wood shaving and holes in your walls from termites, and cockroach nests in secluded areas such as behind cabinets, baseboards and in cracks behind sinks, water heaters or door frames.