Guess there will be loads of different methods, hopefully I will learn something from your post as well
For me it depends on the type of material & the toopath as well, for short(ish) toolpaths like text that don't take a lot of time to run I will sometimes run the toolpath again, sometimes with the z dropped a fraction
i have a few brushes with nylon, brass & wire bristles, from a toothbrush to hoe cleaning type brush size, these often work well, I also use a dremel with various rotary brushes, again nylon, plastic brass etc. I also have a couple of sets of needle files & find these work well with stuborn bits the brushes can't manage or the dremel doesn't fit into.
Really I have just experimented with different things I had that I thought might work
Just to add, sometimes with 3D carving altering the stepover slightly can also prevent them in the first place