 Spring comes when they try to regrow from the ground. Now, Carolina snail seed, of all those that I mentioned, is probably the hardest one to control with all of them. It's unbelievable how persistent it is coming back. We've got it at the office. It was there when we bought the place, and now it's been 10 years or something, or a little bit longer, I guess, and it's still coming up, even out in the turf.