If possible on use of the 41% roundup, use it on a HOT dry day. It works so much better. My DH read this years ago when he was fighting poision oak and the roundup just wasn't working. Now, he waits to spray any bad plants when it gets hot. I know that some things you need to spray in the Spring before it gets hot, but when possible it really works.
Blessings, Mona
