Hoof supplements CAN help, if they have the right nutrients that are lacking. Just feeding them arbitrarily won't help. Yes, good farriers have a vital role, but he's wrong in saying that's the only thing they need. If your local forage and feed combo is lacking, the hoof can suffer. The only way to know what supplement is right for your horse, though, is to have your hay/grass analyzed and compared with whatever grain you give. THen find a supplement that contains the lacking nutrients, But, keep in mind, just blindly feeding supplements CAN be hazardous. Too much selenium, for example, can cause the hoof capusle to slough OFF the horse, much worse than a slight deficiency that leads to some grass cracks. Also, they have to balance each other to be absorbed, otherwise, it creates overdoses and shortages. Best to talk to someone familiar with your local hay/grass and have it checked before adding any supplement.