The largest program, Matrix House, is an in-house substance abuse treatment program provided in partnership with our contracted provider, River Region Human Services, Inc. A maximum of 135 inmates are placed in an intensive four month program that addresses all facets of addictions. Matrix House clients receive group counseling as well as one on one counseling and aftercare. During the past year, 356 inmates (222 males and 134 females) completed the Matrix House program.