Post-incision Antimicrobial Wash vs C. Acnes in Shoulder Arthroplasty

The purpose of this randomized controlled trial is to determine the effect of post-incision wash using various novel antimicrobial solutions on the rate of positive C. Acnes cultures collected from adults undergoing primary shoulder replacement surgery. Subjects will be randomly assigned in a 1:1:1:1 fashion to groups that will receive one of the following treatments: * Post-incision application of Xperience Antimicrobial wash (NextScience, Jacksonville, FL) * Post-incision application of 3% hydrogen peroxide * Post-incision application of 10% povidone-iodine (betadine) * No post-incision treatment (control) The investigators hypothesize that the subjects treated with the antimicrobial solutions after initial incision will have lower rates of positive C. Acnes cultures. The investigators also hypothesize that post-incision application of Xperience Antimicrobial wash and Betadine will have an equal reduction in the incidence of C. acnes as Hydrogen Peroxide.