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_and_numbers

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.