Silicone Keyboard Protector

The protective film is used for covering the PC keyboard in the workshop.
Our technicians always have dirty hands while making repairs, thereby, the keyboard
protected against dirt and dust.
Would hope that something also for the entire laptop gibt- z. B. for keyboard with integrated mouse (entire casing from the laptop to be protected against dirt).
Because it is needed not only in the office a laptop, also in workshops and here it is just not so clean
as in an office.