A couple of years ago I read about this online. I had never heard of this before and I asked my old vet and he had never heard of it before and told me don't bother, so I didnt. Then a couple of weeks later when I was washing one of the geldings I decided to ''go in'' and have a look around. Sure enough, there was a bean a little smaller than a pea and I managed to get it out. I stood there proud as punch holding up my prize while my bf was half disgusted, half impressed. I now check all the geldings every couple of months. But to this day I have mentioned it to all the horsey people I know, and no one I know has ever heard of it and just look at me funny..
Oh, and I was not prepared for the smell! I can still smell it every time I think about it!