Not yet, but it's also not a big problem yet. I know there are ideas to launch chunks of magnetic materials into orbit that will sort of vacuum up a bunch of metallic debris over time.

There's not much you can do about non-magnetic debris though.

Undisciplined

has anyone had any success cleaning up debris? 

i’m thinking something like the ocean cleanup nets that are picking up plastics

charts

Objects Launched Into Outer Space

I think the idea is that whenever there are collisions or small meteor impacts that ejects a bunch of small debris into random orbits. After enough time, there's just too much for safe transit.