In terms of success rates, long term drug rehab and alcohol treatment services delivered by Mc Grann rehab programs have been proven to be more successful than any other treatment alternative. Besides supplying superior care and a structured environment, long-term drug rehab and alcohol treatment services in Mc Grann, PA. are also usually designed to fulfill the needs of each individual in recovery. People receiving long-term drug rehab and alcohol treatment services are encouraged to go through the program at their own pace, with the focus put on the quality of treatment services as opposed to the speed in which the individual completes their program.