I take the anal glands from canine's (keeping fox & coyote seperate) and cut off their foot pads. I fill up a jar with them and top off with fox urine. I set these in the window of my trapping shed and let them rot down for a year. I then run through a blender and add a touch of beaver castor and a touch of skunk. This is my lure.
I take marten, fisher, mink, weasle & skunk glands and place in the same jar and top off with mink urine. After it rots down a year and gets run through a blender, I add honey, beaver castor (heavy on it) and load it up with some more skunk - this is my marten & fisher scent.