los protectores son una mierda
FAQ OFICIAL DE NINTENDO escribió:Should I purchase a screen protector(s)?
The use of screen protectors is not required, however if you would like to use one, we recommend using only licensed protectors. Licensed products always carry the Nintendo seal. The use of an unlicensed screen protector can reduce the touch screen's effectiveness and visibility, making the system difficult to operate. In addition, attempting to remove an unlicensed screen protector can be difficult and can permanently damage the screen. (Any damage caused by an unlicensed product will not be covered under warranty if a repair is required.)
If you don't wish to use a screen protector, the proper use of licensed styluses -- such as the two included styluses -- are designed to help prevent damage. The use of any unlicensed styluses including pens, styluses for other devices, or your fingernail, may cause damage and is not recommended.
If you feel your Nintendo DS screens appear dirty, scratched, or smudged, click here for tips on properly cleaning the screen of any Nintendo handheld system.
For tips on locating licensed accessories, click here.
Basicamente dice que los stylus oficiales estan pensados para no dañar la DS y no es necesario ponerle un protector. Si aun asi quieres hacerlo, usa solo los de nintendo.
Yo personalmente me fio de lo q digan.
FAQ OFICIAL DE NINTENDO escribió:Cleaning a dirty screen
If the screen on your portable system (including either screen of the Nintendo DS) has visible smudges, fingerprints, or other foreign material, you can clean it by using a soft clean cloth such as a lens or eyeglass cleaning cloth.
(If you have noticed that the lower screen on your Nintendo DS has pieces of foreign material, such as crumbs, wedged between the housing and the screen, click here for information on specific cleaning steps.)
To clean a dirty screen:
(If you are using a Game Boy micro, and the screen below the faceplate needs to be cleaned, you will need to remove the faceplate first. Click here for directions.)
1. Slightly dampen a corner of the cloth with water and wipe off the screens to loosen any dirt or foreign material.
2. Using a dry portion of the same cloth, wipe the screens to dry them and finish the cleaning process.
3. If needed repeat the process more than once.
Please note: Protective screen covers can lower the sensitivity of the Nintendo DS touch screen. They may also damage screens as they can leave behind a residue that may be difficult to clean.
Si la pantalla esta sucia, lavarla con un trapo suave (como los de las gafas), humedecido con agua.
Antes de usar un producto quimico, deberias llamar a nintendo, por si acaso... yo no lo usaria a lo loco, pq aqui solo dice agua.
salu2
la info la he sacado de aqui
http://www.nintendo.com/consumer/systems/ds/faq.jsp 
