Mink oil v spray
Never used mink oil on boots. Gortex has solved my waterproofing problem so far as boots are concerned. Gortex lined boots are pricey, but how much do you value dry feet? I also use Gortex Gaiters in conjunction with a light rain suit in wet weather. I use Mink Oil on my gloves (I ride), jackets, belts and britches. I apply it about once a year just to keep the leather supple and nourished. I believe it adds years to the life of an item. I use a spray on the seams of a new tent before using it, that's about it for spray.