I had a hoof crack last Oct, 04 and don't shoe my horses because they are not ridden hard or on hard ground. Went 10 months trying to trim out the crack every 6 weeks, but it would split upwards faster than the trim could delete it. Last July, Walter was also on hard ground and stomping flies and I thought I'd never get the better of this thing, until a friend told me about Gorilla glue. I happened to find some right in the front door of Office Depot one day, and decided to try it. Walter wasn't lame at all. It was a vertical crack that ran from the ground to half-way to the coronary with about a 1/2" spread at the ground. I went out to the field where he was and treated there. I washed out the crack with betadine scrub and a toothbrush, rinsed, put straight betadine in it and applied the glue while still damp. Then Walter decided to mosey off and down went the hoof immediately and that was it. Well, the next day, it looked like it had been in a vice all night, cause that crack was tight together at the top with only a 1/4" separation at the ground. Five days later, it looked gaping again, so I applied it again. Did it again 7 days after that. Then it never looked gaping again, so I left it alone. I rasped the toe off slightly to take the brunt off of it as well. The glue rasped beautifully! Two weeks later, the crack had veered sideways and you could see that growth was getting the better of it. Then the crack blew out. It looked like a tiny robot with a square mouth had walked up to walter and bitten him on the toe. All the bottom of the crack was gone. Within days, the square had grown out, along with the crack. Within 8 weeks, from farrier visit to farrier visit, I had made that crack go away. The farrier was amazed! He had been threatening me with shoes and I didn't want the expense and felt i didn't need shoes for this. No invasive cutting or drilling, no shoes, cured in 8 weeks during fly stomping, hard ground weather......amazing! I do think I was lucky, though. No infection present, no lameness, not a hole left from an abscess...any of these, I wouldn't have used this method....but in this case....worked for me! LOL!