 For years, Dicamba, Roundup, and 2,4-D have been the burndown herbicides of choice. Even today, they're still popular, especially now that Roundup and Dicamba are at or near their all-time low prices. 2,4-D prices, on the other hand, are way up this year, so 2,4-D is probably not a good option for you this summer, unless, of course, you want a low-volatility option like Freelex.