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And here's the same mouthpiece after 30 minutes immersed in white malt vinegar. You can quite clearly see that the scale deposits have gone. What you can also see is that the mouthpiece has taken on a dull greenish hue. This is due to the action of the vinegar on the Ebonite that the mouthpiece is constructed of.
The tile itself will almost always get really clean with just a damp mop. Mix 1/2 cup of white vinegar with one gallon of warm water. Vinegar does not need to be rinsed. It cuts grease and deodorizes, and using a shine mop or towel to dry the tile afterwards will give ceramic tile a very nice shine.