DVD and CD players use light to read and write discs, so there's no physical contact that might produce debris or dust, and no contact that might produce dust-attracting static. I don't recall ever having a problem with any DVD or CD player or writer that could be traced to dirty heads.
Failures are usually due to problems with the light source or detector (unrelated to dirt on components), or with the disk motor or drive.
I'd actually be reluctant to clean DVD or CD heads, because they optics are precise and any kind of residue left on the optical components could diminish their precision and potentially cause errors.