Data is the new gold: it's valuable and required for a range of processes, applications and developments. Generative AI in particular is showing once again what large amounts of data can create. But data is also the new rubbish: it appears in a wide variety of places and in large quantities, accumulates quickly, never reduces in size and sometimes grows very uncontrollably. And the bigger the mountain of data, the more difficult it becomes to use it meaningfully. Our oneCleanup service takes on this challenge and helps to uncover the shimmering gold beneath the layer of dirt. We present the background information and details, and we demonstrate why it's high time that databases are seen not as a tangled mess but as treasure troves.