Many growers experiment with noncommercial deer repellents. These materials currently have no EPA registration, and their effectiveness is quite variable. Leave the wrapper attached because it reduces weathering, and if left in place bars may last several years. Attach the bars with string or wire to outer branches about 30 inches above the ground. There should be no more than 3 feet between bars within the tree.
Caution is advised as bar soap sometimes increases vole damage.
Some birds, such as crows, occasionally cause damage to new growth while feeding on soap bars. Additional applications may be necessary in wet seasons. Several commercial repellents are available to reduce deer browsing in orchards. With repellents, some damage must be tolerated even if the browsing pressure is low. None of the existing repellents provide reliable protection when deer density is high.