So far, since bringing plant home a couple months ago, I've noticed a millipede or three popping through drainage holes in bottom of pot. Initially didn't bother me, but now wondering if it's a pest and don't care for it to be there in my houseplant. It's kinda creeping me out now.

It's still in original pot from store and looks like it's trying to bust out root-style (as S. trifasciata do). I was going to repot, but noticed these invaders.

I've read about submerging the pot in water for a couple hours, but wouldn't that hurt a Sans?

Anywho.. what do I do during repot to keep these buggers away in the future?

Any suggestions?