 So they don't break down. So I don't know, maybe you have a high content of chlorine that's causing that. Is that stain, is that easily removed in the toilet bowl? Yeah, yeah, you can come, you know. Maybe it's like a barkeeper's friend or something like that. Yeah, so I haven't tried that, but it's just, you know, it kind of looks like it's almost floating on the surface of the water sometimes, you know, and you flush it and it goes away a bit.