Maintenance tips:
Don’t eat while playing the harmonica.
Don’t drink high-viscosity, high-alcohol beverages before playing the harmonica. It’s best to brush your teeth before playing it.
Shaking off the saliva from the holes after playing.
Put the harmonica in a dry place(in the harmonica box) after playing
Don’t lend harmonicas to someone else or borrow it from someone else to avoid the spread of the disease.