oxi clean, oxi-clean..........oxi-clean!
1/4 part to 1 gallon. i usually make 1 cup to 4 gallons of water and add about a cup of hydrogen peroxide
pour in something kind of flat, yet will handle the size of a keyboard, keycaps, etc.- heck you can form something and just use a big plastic trash bag as it will not leak.
the water should be deep enough to submerge, however everything will float on top.
*
IMPORTANT- it must be set in
"direct sunlight/uv"....... i usually set mine out for about 4-6 hours dunking in the oxi clean-water mix quite a few times.
i'm not a chemist, but the ox- clean/water - uv has REMOVED at least 70-90% of yellow from age, etc. restoring pretty the default color when the plastic was new. that would be the case and the keys!
it is not a gimmick, but actually works. i would not mix any stronger so as not to fade the legends.
hope this helps..........
