Currently there are no approved repellents or toxicants for woodchuck control in Illinois.
Carbon monoxide gas cartridges can effectively kill woodchucks. You will need an animal removal permit from the Illinois Department of Natural Resources before using fumigants to control woodchucks.
The 'Find a Professional' page of this website has contact information for IDNR district wildlife biologists. The biologist in your county can provide advice on the best way to deal with woodchucks on your property.
