Normal usage in dry environments with clean hands, should not require servicing of the switches, and the switches are rated for 500K+ key presses each.
However, if oils or accidental moisture have penetrated the 1-16 switches preventing them from operating reliably, the switches can be cleaned and serviced like so;
Do not use Isopropyl Alcohol any other parts of your Woovebox.
Please note that some harmless cosmetic "dulling" of the metal around the micro switches may occur with use over time. This is considered normal and does not require cleaning.
As a last resort, it is also possible to service the internals of the switches with some basic tools (and without soldering), however special care and precision is required. If this is ever required, please contact us for a guide.