You can use a toothbrush and water or a mouthwash.
No, mouthwash will not clean a clarinet mouthpiece. Mouthwash is specifically designed to clean your teeth and gums, and it is not effective at cleaning the inside of a clarinet mouthpiece. You will need to use a clarinet mouthpiece cleaner specifically designed for this purpose.
If the mouthpiece is made of plastic, use a soft cloth to clean it. If the mouthpiece is made of metal, use a silver or gold polish to clean it.
To clean a clarinet mouthpiece with lemon juice, first wet the mouthpiece with water and then pour lemon juice on top. Rub the lemon juice around the inside of the mouthpiece, being careful not to get it on the reed. Finally, dry the mouthpiece with a cloth.
The clarinet mouthpiece is made of plastic and it can sometimes turn green with age. This is due to the chemical reaction between the oxygen in the air and the plastic.
Yes, clarinet cork can get wet. However, it is not recommended to keep your clarinet cork wet as this could lead to damage.
I have never cleaned a clarinet with anything, but I imagine it would be just like cleaning any other musical instrument- water and a cloth.
Yes, isopropyl alcohol can be used to clean mouthpiece.