Wow, that’s a blast from the past! I still remember when we used to have a big truck come every spring and spread used motor oil on our riding ring to keep the dust down–worked like a charm, and their feet always looked like they’d been painted with hoof dressing.
Back in the 70’s, there was Fiebing’s or motor oil. That’s it!Hard to imagine now when you get the Dover or SmarkPak catalog. The motor oil worked as well as anything, and I believe the reason was it “sealed” the hoof against the constant wetting and drying that promotes brittle, shelley feet. For that time, it worked just fine; I imagine the oil also had far fewer weird chemicals in it back then compared to today . . . as for the environmental toxicity factors, well, it was a waaaaaay simpler world, folks! We took most things at face value.
As an aside, don’t EVER waste your money on dietary supplements for “feet.” The two most starved rescue horses who ever walked on my place, literally racks of bones, ALSO had the best feet (and still do!) that I’ve ever seen. Poor feet are genetic, and exacerbated exponentially by poor farriers.
They can be cured by Barefoot Trimming methods if your situtation will allow it. But it isn’t dietary. Trust me! 