Recognize and avoid damage in a timely manner! Damage cases in building cleaning are not uncommon. However, most damages do not occur intentionally, but rather due to ignorance or lack of knowledge. This guide provides a practical overview of numerous damages along with important tips from experts and assessors. It is indispensable for daily cleaning practice when it comes to recognizing and preventing damage early, accurately analyzing any damage that has occurred, and avoiding misunderstandings between the client and the building cleaner during the assignment process. All damages are presented clearly and supported by proven action guidelines to facilitate cleaning tasks. The guide also serves as a consistent reference in training and for quick on-site briefings to help building cleaners avoid damages themselves.