These women should learn how to apply a full enema to themselves. That's the only way to be sure you won't shit. It's not all that easy to do, though, and need the old fashioned rubber kind, use maybe six fill-ups of warm water, and get all the shit out. That way the fuckee (actually can be male or female, and the woman could be getting fucked in either ass or cunt) can enjoy letting his/her asshole go without threat of effluvia...The usual kind now available have only one application of water and that's it, it's a ripoff. I've had my rubber one for years, but although they're not widely available, you can find them online. Believe me, it's worth it, but it does take some learning how to really fill up the asshole with water, then get everything out, not only shit but also the water, so you won't all of a sudden spill this out upon getting fucked. Before I really knew how to give myself an enema, this happened to me once while getting fucked. And somebody else shit all over my dick once as a result of trying to douche and not really knowing how.