Clean?

Today's theme is "Clean".

If you follow my blip, you will know that the school where I work is in the process of building a new science block, and we should be moving in within the next year. In the meantime, we continue working in the old block, which is definitely showing its age. Here, one of my colleagues is doing her best to clean the sink in the prep room - a brave attempt but, sadly, with limited success.