Attending and completing a residential long-term treatment (more than 30 days) program in Castana is typically the cornerstone in an addict's successful recovery from their individual struggles with drug or alcohol addiction. This variety of drug rehab is more intensive than others since the individual lives at the facility full-time through the treatment process. While many addicts are initially hesitant about going to a long-term program lasting longer than 30 days they soon realize the great benefit. A residential long-term treatment (more than 30 days) program offers the recovering individual the time to completely withdrawal from drugs and concentrate on themselves. Shorter programs are not capable of this due to their short duration.