Cleaning time for a 54kv apartment takes approximately 1 hour. I do not use introductory cleaning. The brushes get dirty quickly, and the water from the reservoir cannot be drained. Uses very little water for wet cleaning, as if rubbed lightly with a semi-dry cloth. I took it to maintain cleanliness, but not for general cleaning. It collects only dust, and cannot in larger particles (for example, with the size of buckwheat, and even slightly smaller). Purchased December 27, 2022