Unwanted moss growth

I purchased a couple moss balls a few years ago. Since then the miss begun to grow on the rocks, drift wood, live plants, and glass of my tank. I have been taking it out as much as I can, even taking out the larger growth areas in my gravel and boiling the rest. I put the gravel back in the tank and it’s still slowly coming back in tiny areas. How can I ever stop it from growing back into the things of my tank?