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."