Bests & Worsts Reviews from Amazon

I purchased a refill for what I thought was Roundup for 'Southern' lawns, as Roundup's marketing (or their seemingly incomplete product catalog) make no mention of of Northern formulas to Southern customers. In fact, at the time of purchase Roundup's website omitted any mention of the Nouthern formula from their website, and Amazon's unclear listing added insult to injury. Unknown to me at the time of purchase and after refilled my sprayer and having applied the product, it dawned on me that Roundup for lawns is available in TWO versions; one formulated for Northern lawns, and the other for Southern. At the time of purchase and application, I believed that the lawn formula was singular (Southern) and universal; this is because there are no immediate or obvious differentiators present on Roundup's website or on amazons product listing. The labels are nearly identical. The formula I received from amazon and ultimately applied to my southern lawn (St. Augustine) was formulated for Northern lawns, resulting in the immediate death of all grass in the area that had been sprayed... I sure wish the branding for either version could make a clear and obvious distinction between the two formulas -- even many of the product listing's images don't make any distinction between the two versions -- could have saved my lawn instead of killing it.