White line disease in horses?

I have a horse with white line disease and I've an idea of how to treat it. I've heard that most farriers think soaking in lysol is a good idea. How long would I soak it for? Also, would a bleach/water mix do the same job and if so, what % bleach and for how long? I really want to treat it with an iodine/formalin/glycerine mix I got from my vet for another horse who had advanced thrush that had infected the inside of the frog. I've read from veterninarian written articles that the mixture is also used for white line disease. If I soak the foot first in bleach or lysol would the Formalin mixture be too much to spray onto the foot afterwards? Please only answer this question if you've had experience with the disease, are a vet or have worked with one extensively. I really would like educated, solid advice. Thanks so much.