Websites on Woodchucks - Groundhogs:
Michigan State University Extension
Information on Woodchuck damage control in the garden, such as, trapping, fencing, restricted and unrestricted methods.
Problem Woodchuck Control
A nuisance wildlife control operator for over ten years offers his advice on trapping woodchucks in your garden.
University of Maine: Cooperative Extension
Information on woodchucks and the methods that can be used to control them.
Wildlife Damage Control
Offers woodchuck information, such as, description, life-cycle, habitat and damage control information.