How do you disinfect the iPad screen?

Err... I repeat 'I have done this every month or so for about 18 months and there has been zero/nada/zip impact on the display quality nor on the sensitivity of the touch screen' .

.

You do realize hand sanitizer is nothing but alcohol?

Or put a screen protector on, then you can disinfect it to your hearts content while the screen coating remains protected.

Consider PhoneSoap. It uses UV light. https://www.phonesoap.com/