Caution Money and What It Can Be Used for

One of the things those people who – just like me – live in a rented apartment had to pay was the caution money. Most tenants, however, don’t have an idea what it can be used for and are often unpleasantly surprised when leaving the apartment and being told that they won’t get all of their money back. So what can the caution money or simply called a deposit actually be used for?