In terms of success rates, long term drug rehab and alcohol treatment services delivered by Greenville, Illinois rehab programs have been proven to be more effective than any other rehab option. Besides supplying superior care and a structured environment, long-term drug rehab and alcohol treatment services in Greenville, IL. are also usually designed to suit the needs of each individual in treatment. Individuals receiving long-term drug rehab and alcohol treatment services are encouraged to go through the program at their own pace, with the emphasis put on the quality of treatment services as opposed to the speed in which the individual completes their program.