This is a phase II study. This means that BCG therapy has already been found to be safe in humans. The investigators just want to see if using more treatments works better.

Inclusion Criteria:

• Patients must have high risk non-muscle invasive urothelial bladder carcinoma (Tis, TaHG, or T1) that is pathologically confirmed by the Memorial Sloan Kettering Department of Pathology or a documented history of TaHG or T1 non-muscle invasive urothelial bladder tumors.
• 18 years and older
• All visible papillary lesions must be macroscopically resected within 60 days of treatment initiation.
• Absence of urothelial carcinoma involving the upper urinary tract (documented by radiological imaging or biopsy) preferably within 12 months from the start of treatment. Should the imaging or biopsy be performed outside this window it will be up to the physicians discretion to re-scan/biopsy.
• Patients who have received a single dose of mitomycin C following staging TUR.

Exclusion Criteria:

• Currently being treated or scheduled to have radiation treatment for bladder cancer during the study.
• Treatment with intravesical BCG or chemotherapy for a patient's current \