Mark: So what's wrong with the drain?
Dulcia: It's clogged and water won't go down.
Mark: Let me take a look. You know why? It's clogged with hair. No wonder water won't go down.
Dulcia: Well, I guess people who lived here before didn't clean the bathtub.
Mark: You're darn right!
Dulcia: What should I do now?
Mark: Don't worry. I'Ve got some acid here. It will help dissolve the hair down there.
Dulcia: Ur, it stinks!
Mark: Now you know you have to clean your bathtub every time when you use it.
Mark helps Dulcia to dissolve the hair that clogs the drain and tells Dulcia to clean the bathtub.