you need medical grade hydrogen peroxide............2 1/2 tablespoons per gallon water.......mix only when going to use it.....do on day with no wind....use long old clothes, mask, goggles, hat and gloves.............don't save any...........use it all
keep children and pets away while spraying and until it is dry..........................I pray that this works for you...................do the worse one first...........then do the rest......