The product round-up has been banned from use in my town. I sometimes used it on my gravel drive, I also used a lot of salt. Didn't work. Found this great recipe on the net. One gal. vinegar,1 cup salt about 8 drops of any dish soap. Heat 1/2 vinegar to disolve the salt. When salt has desolved add rest of vinegar. Put in syrayer,add soap.Spray weeds etc. Be sure not to spray anything you don't want gone. It kills all plants. I just sprayed my yucka(sp) plant yesterday & today it looks sad. Hope it will kill that,as it is quite invasive