Social workers need training to address at-risk alcohol and drug use. Training in screening, brief intervention, and referral to treatment (SBIRT) occurs in social work education, yet little is known about training sustainability and implementation in practice. Thirty-one MSW students, field instructors (FIs), and faculty were interviewed 1 year post-training to explore their use of SBIRT. Qualitative thematic analysis revealed three major themes: Training feedback, application and implementation barriers and facilitators, and future use and sustainability in practice. Feedback indicated further training needs to overcome institutional, agency-specific barriers and personal barriers. Given varied practice settings, SBIRT training with students and field instructors must be tailored to demonstrate agency-specific benefits and include booster sessions and ongoing consultation to address implementation barriers.