Deer depredation of landscaping, especially ornamentals, is the most commonly received complaint with respect to deer. Although deer are not the only wildlife species contributing to such damage, they probably are responsible for most large-scale damage. Preventive techniques such as fencing and repellants have been shown to be effective in reducing damage under some conditions. Additionally, restrictions on backyard feeding of deer also aids in minimizing landscaping depredation by deer. The use of repellents requires serious commitment by effected residents.
Constant vigilance is required to maintain the effectiveness of repellants.
They must be reapplied periodically based on weather conditions and the growth rate of the vegetation. It should also be noted that repellants might not work for all vegetation types. Given the cost, repellants are the most effective for relatively small landscaped areas. However, effectiveness is related to a number of factors including deer density and the availability and condition of habitat. Normal residential fencing heights are not an effective deterrent to deer.