 closer to the tree than the drip line, but leaving a space where it's not up close to the trunk. Good. Good job. Yeah, but now I've got the Bermuda grass springing through it, and so I've got 20% vinegar, and I've got 30 that I recently bought that I've never used it because I'm a little afraid of it. So what's my best option for spritzing these grass and killing it that's growing through the mulch?