I barbequed this evening, warmed up the grill and was getting ready to use a wire bristle grill brush on the grill to clean it up a bit. I took a look at the brush and saw there were a lot of loose wire bristles on it. This thing wasn't more than 3 month old. I remember that years ago the daughter of a guy I worked with got a wire bristle from one of these brushes in the throat and had to go to the hospital to get it out, The wire had come loose from the brush and stayed on the grill, from there it stuck to whatever he was BBQing and she ate. Then and there my brush went in to the trash. No more brushes for me, I'll be using one of those green pad type cleaners from now on.
So, you may want to take a look if you use them.
Good luck,
Steve W