[QUOTE=Rick Burten;6520823]
Durasole, Crossapol, Keratex are all good choices. My preferred one is Durasole.
Venice Turpentine while very good for pulling soreness out of the bottom of the hoof and as a bactericide , is messy and not as effective as the other products at hardening/toughening the bottom of the hoof. It is not a home remedy and is routinely used, usually mixed with pine tar, under pads. It is also a component of Magic Cushion which has proven its efficacy but not as a sole hardener.
Before the advent of the current products, it was not unheard of for a farrier to melt some mothballs/crystals(those that used naphthalene as the main ingredient) into the bottom of the foot to help relieve soreness and to provide a hard covering over the sole. It was also not unheard of for ‘white gas’(ie: Coleman lantern fuel which has as its base, naptha) to be painted on the soles of sensitive/sore horses. However, I am not aware of anyone recommending that practice today.
A more relevant question is why you need a hoof hardener in the first place? And, what part of the hoof are you trying to harden?
Another problem with Iodine and the like is that it is very caustic and if you happen to get some on the coronary band or above it, you will give your horse a nasty chemical burn. OTOH a 2% mixture of tamed iodine(betadine) won’t do harm, but its also not a very effective hardening agent.
I did not specifically call anyone here, stupid. I did however opine that " using a homemade concoction as a hoof hardener rises almost to the level of performing self-surgery on one’s brain. IOW, it is TSS*"[/QUOTE]
Thanks for all the info that was very helpful! Currently I’m not in need but had heard the gas thing and wanted to mainly see if anyone else had heard that too and if not what their go to products are. Again thanks for the info and explanations!