- Our Anti back-flow enema bulb, unlike other common enema douche without check valve, contains 2 one-way stop valves to effectively prevent the back-flow of dirty water, cleaning deeper and more effective. Ergonomically designed with an angle to work with the natural contours of the inner rectum to allow for a deeper reach and more effective cleaning. The oval anal douche is designed to be convenient to hold and can be filled with a full 150ml of water. The douche bottle and nozzle are detachable, making it easier to clean and dry faster. Regular cleaning is benefit for your personal care and family health! It is suitable for men and women.If you are not satisfied with our anal cleaner, please CONTACT US. We are committed to providing you with the best customer service - The outer layer of the nozzle of douche bulb is made from body-safe silicone. Its safe, non-toxic odorless, latex-free and BPA-free. Please feel free to use it.