I use a very small applicator. Severl of our LHS's sell small plastic tubing (less than 1mm OD) that you stick in the end of your bottle. It comes in seceral foot sections and you can cut off however much you need. I use 3 or 4 inches so I have enough to put the end of the tube (very small) in the hinge, then tilt the bottle and can actually see the CA move up the small tube and get just the right amount. This tubing is smaller at the tip than the small applicator supplied with ZAP brand CA.