I have battling this plague for a least a year, and I think I finally got a foothold. I tried dosing the whole system to only them come back again. Unfortunately, Fenbendazole stays in your system for time even with carbon and water changes, and I could not place any of my shrooms and other softies back in the system for a while. I decided to take the surgical approach of moving infected rocks out that had no corals and basically placing in the sun and drying out the rock. This was the only way I found of truly eradicating them from the rock. Rocks with corals, I had to set up a separate tank and treated it with a light dose of Fenbendazole (Fen). I noticed when treating it with Fen, the cloves would shrivel up and exposed the network of tendrils of the cloves. When this was exposed, I was able to more successful scrub the rock and corals themselves with a toothbrush since the cloves were weakened. I have previously tried to just doing a good scrub on the rocks, but some piece of the clove would always survive in the smallest area and come back. This is extremely tedious, but ultimately proved to be the best way to eradicate them for now. Cross my fingers...
The Fen can be effective as a whole tank treatment, but it had too many long term negative affects on my tank for me. Good luck.