Edmund Morris, Ten Acres Enough
“ There would also be great danger of its being imperfectly done, as many worms might escape the search, while the vital power of the tree would be seriously impaired by permitting them to prey upon its bark and juices even for a few months. Prevention would be far cheaper than curing. The offensive odor of the tar will cause the moth to shun the tree and to make her deposits somewhere else; while if any chance to light upon it, they will stick to the tar and there perish, like flies upon a sheet of fly paper. ”
