Anal Play

I need advice on anal sex. I mean I have done it once, but that was 17 years ago. I have anal beads and I use those with ease and I enjoy them and my SO's finger occasionally.

My concern is how clean is it? I mean isn't there the potential for him to get feces on his penis? sometimes its on my anal beads. Should I use an enema prior?

Ladies who are anal savvy, help!