Posted: 05/11/2015 at 22:28
Once and for all - NO CHANCE!!. it will take time and effort. 1st i would stripe
the membrane cover off,Then DAMAGE the "leaves"otherwise the weedkiller will have no chance as the leaves have a surface that is water proof ,apply weedkiller ALL over that means the edges as well, replace a weed control membrane that will block out light COMPLETLY, around edges put something to keep the light out eg stones, now leave it, just keep fingers crossed.