 And she's been using sealing paint, but that doesn't work so well because the stains get through that. You have to use kills, don't you, or something like that? Yeah, that's right. Whenever you have a water stain, you have to use a primer. And if it's a small stain, you could just do what we call spot prime, which is to just get the stain itself covered. But if you have a larger water leak, you really have to prime the entire area. So let's say it's a ceiling in a bathroom. You'd have to prime the entire ceiling because if you don't,