My friend's gynocologist told her to change soaps. She was allergic. Once she changed to a mild soap it got rid of the itching. This helped me too. ... View related article.
Once round-up hits the soil its rendered inactive. I would be very careful about spraying close to the tree/ or any plant you want to keep. You may want to cut the grass down and just hit the top of the grass with the round-up and it will go to the roots of the grass. ... View related article.