I have a maintenance job with a Trumpet vine which sends up dozens of suckers every week. This chemical seems to be my only hope of keeping up. However I have a problem with the spray bottle. It only sprays in a needle like stream which doesn't work for a foot long vine. 90% of this expensive product misses the target. My method is to spray my Nitril gloved hand and wipe it on the sucker. A more dispersed spray would work better. I was glad to see it was a 16oz. bottle and not 8oz. as described.