Well, lots of people talk about shaving their genitals and how itchy it is, etc. For men it's a bit more tricky than women, but I think the best method is this:

Get a good electric shaver. Not a cheap one. The thing to know is that hair cut this way do not cause any itchiness. Trust me. The tricky thing is not how to shave the pubic area around the cock/balls, but the cock and balls themselves. For the balls: you need to stretch the skin. For the cock: you need to shave when it's erect.

It's actually best to use an electric shaver that, besides the main blades, also has a side trimmer. The side trimmer helps a lot both for shaving your neck but also shaving hairs on the balls. Again, skin must be stretched. When you move to a different place, stretch skin again.

And what about the anal area? Same. Use electric shaver, with trimmer.

Now, for the fine job in the end, use a nose/ear/eyebrows hair trimmer, on that has a 1-inch cutter like the Philips NT9110. This works great in the anal area and for some persistent hair on the balls/cock.

Using the above won't result into itching. But you need to repeat every few days.

Some of the electric shavers are of the wet/dry type meaning that you can lather the area before shaving. I haven't tried that because I'm afraid that soap + electric shaver may behave like manual blade and may result into itching.

For women, the job is easier and the above work in exactly the same way.

I discovered this method a couple of years ago because I found someone on youtube describing it (without pictures). And, yes, it works.

Me before shaving: /kkrb9epezxltpic.html
and /xy1nck9v3f7upic.html
Me after shaving: /qynrei25mhu2pic.html (but you can still see some partial hair which were eventually removed by side trimmer: /uiizibit5mulpic.html)
And here is the result on the woman: /3yr9z7562x0ypic.html (she performed the operation herself!)