Apply netting or mesh screening to eliminate access. Before applying, the lawn and soil must be thoroughly wet. Hinder is a growing-season repellent for rabbits and deer. A mixture of ammonia and a fatty acid soap, it may be sprayed on plants including vegetables and fruits. Other repellents are generally more expensive and have the same drawbacks.
Some seed companies offer small electric fences for home gardens.
The space under the electric fence must be kept free of vegetation. The fence produces a mild shock to anything, including people and pets, that touches it. Dudderar suggests buying a 4-foot width and bending out or burying the lower 6 to 12 inches. Metal or plastic wire must be thick so rabbits can't chew through it. Fences may discourage but will not totally deter woodchucks.