I don't give a hoot what's in my wax, as long as it is not an "animal" smell or a "food" smell. As you dip traps in the wax you are going to get things like small residual pieces of dirt (maybe hidden it the coil springs), flakes of rust, dye residue, etcetera. And if you wax a dipped trap some of the dip will dissolve and discolor your wax. I know this from experience.
Through extensive applications in the field, by thousands and thousands of trappers, none of these products have be shown to elicit a digging or avoidance response in canines.
Gary has touched on a good point. I think if a lot of trappers, especially older trappers
, could overcome the psychological barriers they have established for themselves, they could enjoy trapping with much less hoopla, and much less mental stress.