Attending a residential long-term treatment program (more than 30 days) is the best way ofapproaching a severe drug or alcohol addiction problem. This type of substance abuse rehabilitation facility is more comprehensive than others that only last a few weeks or those where the person in recovery is free to come and go as they please. Attending a residential long-term treatment program (more than 30 days) means that you as the client will stay at the rehabilitation facility around the clock while you are in recovery. While offering a more relaxed home-like setting the individual has access to treatment professionals at all times. Long term drug or alcohol rehabilitation centers are an excellent choice for those who have a long history of addiction or who have had other unsuccessful attempts at recovery in the past.