Living with Deer in Illinois

Other Control Methods

Other deer population control methods, such as sterilization or relocation, are not viable options. If the deer population in a given area is already high, merely sterilizing the deer that are already present will do nothing to reduce deer numbers in the short-term and is typically expensive. Use of surgical sterilization and immunocontraceptive (IC) vaccines continues on an experimental basis in some areas of the country. The United States Environmental Protection Agency (EPA) may register the new IC vaccine, GonaCon, for use on free-ranging white-tailed deer. However, the highest effectiveness achieved (in stopping does from reproducing) during two field trials was 88 percent during the first year post-treatment on one site, and the effectiveness fell to 46 and 47 percent during year two on both sites. The EPA registration may specify that GonaCon must be hand-injected. Although it has been demonstrated that ICs can be used to prevent reproduction by individual animals for multiple years (in captive settings), not enough animals can be captured and treated in wild deer populations to have any significant population reduction effect.

Relocation of white-tailed deer in Illinois is no longer a viable option due to potential for spreading unwanted wildlife disease (such as CWD) and/or parasites. Additionally, the stresses of capture and transport lead to low survival of the deer.

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