remember me i was the one with the uglydiscolored floor until i called the grout doctor. he did awonderful job staining my floor. now i have a shower that needs to becured. i'm tired of that molding mildewing ugly grout. it's definitely a job forthe grout doctor. the grout doctor will take out the ugly grout ,replace it with newgrout and seal it. leaving my shower lookinglike new again in just one day and the grout doctor is locally owned andoperated. kinda like neighbors helping neighbors. so call the doctor that still makeshouse calls the grout doctor.