 Yeah, there's no other control. I have them in my perennial department at the store right along the fence, and the seeds fell from when we had them maybe 10 years ago, and they come back like a champ. But, you know, then I also have bleeding hearts, too, and they just take off like crazy, too. But eventually they die off, and we just cut them or pull them, and then they keep coming back. But then they come back. Yeah, they come back. You know, you've got to actually dig them out if you want to do any type of renovation.