I have considered the permanent mulch but it is expensive! I put in the cheap plastic edging because ... it was cheap! I think that as a border between grass and mulch it works fine as long as no one sees it. My grass doesn't spread by stolons so that's part of why I like the cheap edging. If you need that space to keep a lawn in check the recycled plastic mats won't really help unless you have the real edge behind it and the mats are more about mowing. The copper definitely needs to be folded over to be safe. Even the copper tape can give you a nasty cut if you apply it with out gloves. I found the tape just didn't stick to the wood of my raised beds and I ended up using the same iron phosphate bait that worked well in the other parts of my yard. I had more trouble with voles and mildew than with slugs and snails.

Take out 1-inch plugs that include roots and plug them into 1-inch holes elsewhere in your yard.

I wouldn't go that far....It is far from dead....I think it is just biding it's time until the diminsion wears out. My back yard has already start to fill in aggressively with the recent heat wave (4 days of 100+) and the front might be creeping out as well. I did aeroate and dethatch and top dress with compost in the front yard to try to help things along... I think the front is worse because I put the Diminsion down a little heavier there than in the back. So, no, I don't think you will kill bermuda this way, but if your neighbor has bermuda you might want to put a heavy dose of Diminsion along the border with his yard to try to delay the advance! :)

I have a pot of it in my small pond. The runners actually will escape the pond and take root in the soil. In the water they produce a small root and leaf at each joint in the long runner. Each one makes a new plant.