Bees wax. Heat the wax to liquid, warm the boots with a hair dry and paint on the wax. Let it absorb and reapply if necessary.
Docbill;
Good evening to you sir, hopefully this finds you well.
I'll second your method as the best one I've run onto to date.
I've done my Danners, Meindls and work boots too. It stays for at least 6 months on the work boots and seems to make them less susceptible to cuts as they are a wee bit more "slippery" for lack of a better term.
Good luck to the OP in waterproofing his boots and all the best to you all this spring.
Dwayne
