I have been using micro-applicators (see attached) to clean small adapters, between pins, and the like. They worked well but after a few years I worked through my supply and had to re-order. It looks like they are more available than ever before, but unfortunately the new ones don't appear to be resistant to isopropyl alcohol: once wet, they shed like a dog.
Does anyone know of a brand/style that is compatible with IPA?