Thus the two-step method - bake it with steam and then cover it with cardboard and/or newspaper, a very thick cover for Bermuda. I have lots and lots of newspapers (I use them whole and shredded when shipping tropical plants), so that's what I use. I will use 6-10 layers of newspaper over Bermuda. I don't know how long the newspapers last, but I would guess that it holds up for a year or so. Any grass that sprouts later can be spot-treated with contact Round Up to kill it.
