Hi John, I've never tried. But I can't see how it would train anyone to go in a diaper. I mean yes, once the person has taken an enema, it would have to be expelled, and it can be done in a diaper, but I don't know how this would train someone to go in a diaper. If what you mean to ask is, would it make it easier for someone to use a diaper? Then yes, at least for that one event, but I still can't say it would train them there after. I hope this helps you out.