Mixed urinary incontinence, though common, is often challenging for clinicians to treat. With guidelines and best practice statements published for overactive bladder and stress urinary incontinence, respectively, we rely on current research for data to support treatment decisions for mixed urinary incontinence. The goal of this paper is to review the research and better understand the outcomes that can be expected in patients with mixed urinary incontinence who undergo a mid-urethral sling. Seven articles published from 2011 to 2016 were reviewed that directly addressed this clinical question. Greater than 50% subjective cure rate of urgency-related symptoms was reported in these studies with some as high as 89%. Age, body mass index, and previous incontinence surgeries were found to influence the outcomes. Improvement in urge-related symptoms is commonly seen after a sling is placed for mixed urinary incontinence. Managing patient expectations and patient education is critical in these difficult clinical scenarios.