Ken wrote: " There is a place for/need for weed killers, but caution may be a good idea. Don't spray something you don't want to kill." I read somewhere that Roundup or glysophate is harmful to amphibians. Since I love frogs and toads - especially in the garden - I avoid Roundup and try to find herbicides that don't contain glysophate. Dell SE Pennsylvania, USA, Zone 6/7