I clean up the big stuff by hand, knife, snips. Then I have a small handheld adjustable butane torch I give the parts a quick blast with. Works great on PTEG, but you have to be careful on PLA.I saw a video where some guy took a heat gun and did a quick "blast" of the printed object and those little strings disappeared quick! I was thinking of trying it out.
Careful though it can create small blobs of melted plastic on your print. As long as you don't blast it too much they will brush right off.