I have had the most success with Q-tips and time. 91% alcohol if needed. Also I have found that if the Q-tip gets any bit dirty or loose (starting to separate) then it is time to rotate the tip or switch it out. Depending what I am working on I will use the other end. But you go though a ton of Q-tips. Good thing they are only like 3 bucks for a box of 500. Some examples of my work with cleaning and new additions.