This study aims to evaluate a catheter-free method for delivering medications directly into the bladder, known as intravesical instillation, which is commonly used to treat conditions such as interstitial cystitis/bladder pain syndrome (IC/BPS), recurrent urinary tract infections, bladder cancer, and post-chemotherapy or post-radiation cystitis. The study investigates whether this method, which eliminates the need for catheterization, reduces discomfort and complications while maintaining treatment effectiveness. By collecting data on patient experiences and outcomes, the study seeks to determine if this approach provides a safer and more comfortable alternative to traditional catheter-based treatments.