Irrisept C.Acnes Study

Inclusion Criteria: 1. Patient has signed the IRB-approved informed consent form specific to this study prior to undergoing any research related procedures 2. Patient can read and understand English 3. Patient who will undergo a primary shoulder arthroplasty 4. Patient is over the age of 18 Exclusion Criteria: 1. Patient who has had a previous surgery on the ipsilateral shoulder 2. Patient has a known allergy to topical iodine or Chlorohexidine gluconate. 3. Patient has had non-surgical prophylaxis antibiotic treatment within 14 days of index surgery 4. Patient requires a revision procedure for a previous ipsilateral shoulder surgery 5. Patient has any significant pathology that, in the opinion of investigator, makes the patient unsuitable for study participation 6. Patient is a pregnant woman