My horse has a short mane but I use Mane N Tail Detangler on his tail and it works great! But with his tail, its just like the hair gets stuck together, but with the other horse's manes, it is seriously knotted. So I don't think that a simple detangler is going to work.
Any ideas? I don't really want to cut them, but I feel like that is going to be the only option.