Dairy cattle eating camphor leaves, and/or whole young seedlings, can produce tainted milk, especially in extended dry or drought periods, as oil-contents of leaf and branches increase and the combined percentage-contents of camphor and safrole in the diet reach very high levels. Survey-inspections of fenceline camphor trees between Lismore and Corndale confirm that these are highly repellent chemotypes of the trees, which no livestock will ever touch or browse.See also BIRDS for a detailed report on the proven Sterility of various poultry, and wild native bird species.
The best example of Camphor's profound repellent capability
against insects is depicted by Bee Species in northern New South
Wales. A survey of Apiarist-Bee Keepers in the Lismore/Ballina
districts revealed that not only do:
1. European Honeybees not attend flowers of Camphor trees in springtime, at either full or partial inflorescence;
2. Native Honeybees(one or two species), once prolific in the Northern Rivers Region as stated by long- standing Apiarists to be so rare, that the only known nesting colonies remaining active in the wild at Evans Head, south of Ballina and near Ocean Shores, both in non - Camphor infested districts.