I've got to be honest, I've only been using the Kiwi natural, as per the original instructions, and after the very first time, I haven't had any problems. At this point, I don't see a reason to deviate. I usually do this about once a month, and I do it at the same time that I switch out my strings (I always have a set soaking in denatured alcohol, ready to go).
- I wash my hands well, then I apply the wax using a paper towel, making sure that there is a thin but precieveable layer. I let the wax 'dry' in the same way car wax dried to cloudy. I also very carefully avoid getting wax on my hands...it'll track off on the neck later once I've polished it out, and it does make everything feel sticky, even after carefully washing your hands.
-I rub off the residue, using another papertowel. Sometimes, I do a second coat/removal.
-After I've used the papertowel, I get out a clean cotton (100%) cloth. I keep a pile of nice soft absorbent bar-cloths on hand, as I keep one in my case to clean my strings while/after playing (obviously, use a clean fresh one). I spend some time 'rubbing out' the neck, using quick light movements, repeatedly and for a while, until the neck feels smooth and slippery under the cloth.
-All done!
It's been working great.