I always having remove metal fragments out my feet and hands. I had worst cases with thorns and even had to have a glass shard remove once. It may because I tend to go bare foot a lot. Now I do wear safety boots while working as it is necessary for working on equipment as you know what you might drop on your feet.

But on the subject the those wire brushes it is a good idea to wear a full face shield when using those high rotary brushes. I have pick them out my face a few times where I just wore safety glasses. Just think how many small metal fragments I produce with my carbide rotary file in my die grinder.

I also have trouble getting things out my feet but more of eyesight problem. See I am very nearsighted so that my my glasses are no use close with wearing readers to offset the lens power. Without the glasses I can only see clearly out about 12 inches. No way I'm that flexible anymore.

They do have these magnets for small shops and roofers that you can push around on two wheels.