Moles can burrow under your lawn, causing damage to landscaping, sprinkler systems, wiring, etc. Technically, they are not rodents. Their mounds help identify them. They typically grow to 6″ - 12″ long. Unlike voles, they survive primarily on worms, and do not eat the roots of plants. They can produce 1 litter of 2-5 young annually (typically in the Spring), and can live up to 6 years. Since they are solitary creatures, and do not eat roots, their mounds can typically be filled in or covered and they can be ignored until they move on.