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Use mink oil, buy at any good shoe store. Work it into leather with cloth, softens and waterproofs.
When your wife isn't home, put your boots in the oven on the lowest temp you can get for a few minutes, just to warm up the leather a bit... when they are good and warm wipe on the sno seal... the warm leather soaks up the sno seal like crazy! You can repeat the process once or twice... Works like a champ!
Is it SnoSeal or SnowSeal? Either way use that and a hairdryer to warm up the leather. Two or three coats and you'll be golden.
A note about putting boots/leather in the oven from a guy that does a bit of leather working...Be careful when you do this, and only put your boots in once the oven is up to temp (as low as it will go) because a lot of ovens have wild temp swings when getting up to temp. IE 500 degrees full bore until up to temp, then it backs off as soon as its up to temp. Heat is one of the biggest killers of leather, and I'd rather not fry mine. I put my boots on a boot drier to warm them up, not sure I'd trust a $500 pair of Whites or Nicks in an oven that costs the same. But I do put knife sheaths and such in there to dry carefully after wet forming, but only after the oven is warm, I know from experience that a lot of ovens will cook your leather before the are up to temp.On the subject of treating leather, I only use Obenaufs now, because it treats and rehydrates leather without rotting it out like a lot of things like Neatsfoot or mink oils. That's what I use on my Whites wildland firefighting boots, and what I use on the leather uppers of my Schnees. I don't like my leather to get all soft and rotted out by oil, because that destroys the support and also lets the stitching pull out or rot through. If you do a little research you'll find that things like mink oil and neatsfoot are actually worse for leather than anything.
Thoughts or experience with Snoseal? Another a beeswax based product that seems more readily available and cheaper than Obenaufs. I don't have expensive leather products like you so I've been using Snoseal quite a few years now on my leather gloves and boots. Other than needing heat for application I really like it, but I'm curious what your take is on it since you seem really knowledgeable on leather care products.