 Once randomized, Day 1 study drug instillation will occur 60 30 minutes post TURBT. Patients will return on Day 15 5 days for a second instillation unless their pathology results are available and show non Ta, G1-G2 histology; in the absence of local pathology results by the Day 15 visit, patients will receive a second instillation of study drug. All histology specimens will be reviewed by a local pathology laboratory and all clinical treatment decisions and study analyses will be based on the local pathology review. Patients whose pathology is other than Ta, G1-G2 will be followed for safety at Day 35 5 days from the last dose of study drug and then discontinued from the study. 