Even 5% will burn the foliage right up. The problem is, is without more dosages, the foliage will grow back a little faster. Also, only use this like for cement areas. This can not be used in place of Roundup for soil sterilizzation like for reseeding. There will be WAY too much acidity in the soil for quite some time.
Thank you, Dad - for always being the dad that you were. You truly are my hero. You always were.