@conybeare, my 'technique' is, using either a can of sno-seal or mink oil,  take two fingers into the can and wipe a fair size 'dollop' of the stuff directly onto the boot surface and liberally smear it on.

Works terrific for me.  Some folks will use a hair dryer to warm up the gunk and let it soak in a bit.

It's a bit of a messy process and you certainly don't want anything to touch the boots until you put them on at the beginning of the hike, but this really works.

good luck!

REI Member Since 1979 YouTube.com/philreedshikes