I spot my prints with SPOTONE dyes... I used to use brushes but found that Iwas too clumsy with even the finest of brishes and now use tooth picks or cocktail sticks... I moisten the ends and then add dye as needed. It works great and I find I no longer over cover areas like I did with the brush. Like Vincent, I knife occasionally. However, on some negs I may add a spot or two of spotone to the neg if I am getting black spots on the print. Then you spot the print afterwards.