currently using a ibm kb-9910 ps/2 keyboard i can clean with a cloth at the top but i can't clean the area where the dust are located under the keys i also used compressed air to clean it but can't remove can i clean it with water..
the dirt is visible if i try to look at it ..it looks ugly more dust is located under the keys
Probably, the dust have settled for a long time & already stuck.
I myself do not have experience to remove & put back the keys of a keyboard & I probably would not try it for the trouble. If it is not too obvious & the keyboard works fine, I think its fine to leave it alone.