Again we the public have been lied to by our government and corporations. RoundUp is very bad stuff. And here is the proof: It never breaks down and it never goes away. It harms you, your plants and all living things it contacts with. It does not wash away and will leach into your groundwater.Do the future a favor and do not use Roundup. Just boil some water and pour it over the offending weeds. Just miss pouring it on your toes.