You can sometimes find Vantage at better Feed Stores or Turf Stores. Lesco carries Sethoxydim-Pro. Go online to Ebay and search for Vantage by Southern Ag. I know that Sunshine Gardens in Fl. has smaller quanities. Make sure you read the label many times and error on the weaker side with applications about two weeks apart. Too much and you will damage the centipede unless it is properly fertilized. A healthy lawn will bounce back. That torpedo-grass and Dallisgrass will turn colors within a week and show signs of stress. Make sure that you use a surfactant; I like MSO as it opens up the cell walls and the plants absorb quicker. Again read your Vantage label. DO NOT USE ON ST. AUGUSTINE. It will kill it quickly.