Periodic weeding of the library collection is necessary to maintain the overall quality of the collection by removing obsolete, inappropriate or damaged materials. Weeding has been shown to improve patron perception of library quality and lead to increased circulation.


Like selection, de-selection is a complex task that requires weighing multiple competing variables to arrive at a decision. The following criteria are meant to be guidelines and cannot be applied in a formulaic manner. Decisions made regarding de-selection are based primarily on the professional judgment of the librarian.