Participants are allowed to complete CM three times per week for the maximum of 12-weeks. At the six- and 12-week time points, participants will complete the Treatment Effectiveness Assessment (TEA) with study personnel.

If the sample be methamphetamine negative, participant will be positively reinforced and offered incentives. Participants immediately draw the reinforcement slip of paper to receive a prize from a selection kept on-site. Approximately, half of the slips offer written praise (e.g. "great job!"). The other half of slips are then divided between low value (e.g. food gift cards, bus passes), medium value (e.g. prepaid cell phone, clothing gift cards), and a few large value rewards (e.g. iPad, jewelry). Should the sample be positive for methamphetamine, no reinforcement and/or incentive to be provided. Participant will be encouraged to continue to participate in CM program and follow-up on the next CM date.

Treatment Effectiveness Assessment (TEA): This assessment asks individuals to respond to changes in four domains following a drug treatment program: substance use, health, lifestyle, and community. The score for each domain can range from 1 (no change or not much) to 10 (much better), for a total score of 4-40. This score allows for the prioritization of each participants values, and therefore does not require strict abstinence to demonstrate benefit from drug treatment.

Interviews will be conducted as semi-structured interviews using a priori interview guides. Interviews will be transcribed and analyzed using a Template Analysis approach. Two coders will conduct coding of the interview data to ultimately identify themes that will be used as the basis for interpretation. The final analysis of the qualitative data will include contrasts and comparisons made across interviews to examine overlaps and divergences across any relevant sub-samples (e.g., sex, age). Results will present thematic patterns, how frequently each code occurs, and any contradictory evidence.

Study personnel will ask participant to complete a urine analysis screen. Following completion of the urinalysis, study personnel will use a test strip to determine if the sample is methamphetamine negative or positive. Results will be documented and analyzed for a reduction in methamphetamine.