Typically, anal douches are used to clean the rectum and colon, prior to a To some people, anal douches sound exactly like enemas, but there are some key. There are different ways to give yourself an enema or anal douche, but Remove the showerhead and clean the end of the hose carefully before using it. How can I best prepare my rear end for "special" anal sex? (NSFW) . (Link is to the enema section, but she's the go-to for anal sex advice).