I love my shower shot. I clean out a few times a week, and always before a date. It's a great feeling being nice and clean inside and out.
A word of caution though. For a couple of years, I lived in Jersey City, NJ. Not too long after I moved there, I got explosive diarrhea, like I've never had before or since. I went to my MD, and it turned out to be giardiasis. My MD told me that the water in Jersey City was notoriously bad for crypto and giardia. Of course I might have gotten dosed by brushing my teeth (I'm not a big water drinker), I think I probably got it by shooting the stuff up my butthole. Most municipal water supplies are decent, but some are not. And some of the decent ones have problems during the summer months when reservoirs get low. If you check with your local HIV/AIDS organization, they might have an idea about what you're dealing with. One of the great things about living out here in the Howling Wilderness is that I have well water, so I can douche to my heart's content.
All the best,