I'm not debating any of the items used, but here is my experience in the past month. I've been cleaning up overgrowth and weeds from property in Arkansas and Georgia. In particular I've been trying to kill a bunch of poison ivy and poison oak that has taken route do to the unuallly wet summer in both states. I started off with Roundup, switched to the Beyer products when the Roundup proved disappointing and finally mixed a solution of table salt, vinegar and dish detergent. The formula is readily available on the web. It took 3 or more applicatiions of Roundup to just kill the minor weeds and grass, the Ivy just laughed at it even though it stated specifically it would kill poison ivy and oak in 24-48 hours. It didn't do it and I've requested a refund from Roundup. A friend suggested the Beyer products. They worked some better, took a week to turn the poison ivy brown, didn't affect the poison oak and hardly had any effect on the rest of the weeds. I used the entire product making multiple applications per week. The home made stuff worked great. In 24 hours it had killed everything I sprayed. I used this home made salt, vinegar, dish detergent solution a few years back on some fresh cut tree stumps. It stopped regrowth on the stumps and prevented grass growth around them the first year. After that, the grass grew just fine and we even had a "volunteer" tomato plant start in one stump. I'm assuming my mixture and application rate are not enough to prevent future growth. As stated, this is only my experience and not an endorsement for any method.
John
