Stack maintenance is a general term for the work done in the stacks. All of the work that takes place in the stacks is intended for the betterment of the library and the patrons. When the stacks are organized in an orderly fashion it allows patrons and librarians to easily find what they are searching for. If a book is mishelved, it could be lost for a very long time--no one knows where to look for it! A tidy shelf also ensures an aesthetic appeal. If the library looks good and the books are easy to find, patrons will return.