Just to chime in, we have these and they haven't been too helpful in cleaning heads. http://www.soscleanroom.com/product/swa ... -and-tool/
(very similar looking to these that Larry was curious about: https://www.berkshire.eu.com/shop-our-p ... -tip-swab/
). It could be that the heads are bad and therefore cleaning can't be helpful.
For cleaning fingerprints off platters, we use these: http://www.soscleanroom.com/product/swa ... room-swab/
. They work well. First we try with just these pads and it's usually successful. If still dirty, we use Acetone (https://www.amazon.com/gp/product/B007V ... UTF8&psc=1
). First, we clean the dirty area with platters not moving, then finish it off by cleaning again while spinning the platters (gently press down swap, spin platters, keep swap depressed around damaged area). The "spin" clean is crucial.