This is the perfect item for when someone needs to be squeaky clean. The Shur Shot comes with a diverter valve that attaches behind the shower head. Once installed ( installation takes about ten minutes and is as simple as replacing a shower head. ) the diverter control on the valve sends water either to the nozzle or your shower head. If someone is getting fisted regularly, or a perfectly clean ass fuck is desired, this is a great item to have. It also great is you want to have the ability to administer an enema at the drop of a hat, no getting out the bag and filling it up etc. Just hook them up to the nozzle and go, they will be cramping in minutes.