 The weeds need to be able to be impacted by the herbicides, and Lancaster discusses when that is. One of the rules of thumb for weed control is that the weed needs to be actively growing for the herbicides to be, especially translocated herbicides, herbicides that move through the plant. So that would be our 2,4-Ds, dicambis, glyphosates. And also, if you have a contact herbicide, so that would be things like our paraquats, our sharpen, those products need to have adequate leaf area.