ining a fibrosis-inducing agent, anti-infective agent and/or hemostatic agent is injected into the diverticulum (alone or in combination with a bulking agent and/or a polymer or polymeric carrier, which may be in the form, for example of a gel, paste, or spray) in order to enhance scarring and permanently close the urinary diverticulum (e.g., by inducing the production of fibrous tissue which fill