I have a 2006 Red Yaris RS 3 Door. I love my car, except that I have had a difficult time keeping the black dash pieces looking clean. The reflective glossy black surface is like that of a guitar or piano and highlights every piece of dust.
However, I found a cheap way to fix it. I originally bought a california interior duster at Canadian Tire. It left red lint in exchange for the white dust, and that was no good. I picked up the red lint and left fingerprints. A friend recommended the swiffer duster. They work great, I have left it in the box under the passenger seat and whenever I'm stuck in traffic I dust my dash and it looks showroom new.

Thought I'd pass this along.