Works quickly - even faster in warmer temperatures. Revolver herbicide controls many tough-to-control grassy weeds such as Poa annua, goosegrass, clumpy ryegrass and tall fescue. It's readily absorbed by foliage, where it stops production of key amino acids. Cell division and growth stop within hours. Features Postemergence control of cool-season grasses in warm-season turf Goosegrass control and dallisgrass suppression Different mode of action for resistance management Labeled for use on listed bermudagrass greens Easy mixing and application Low rates, cost-effective Apply as late as 7 days prior to overseeding with perennial ryegrass or Poa trivialis Weeds controlled Bentgrass, centipede grass (suppression), dallisgrass (suppression), goosegrass, Kentucky bluegrass, Poa annua, Poa trivialis, ryegrass and tall fescue Please see the product label for a full list of weeds.