some people like doing a salt dip, or potassium permanganate, h2o2, or bleach. I've tried the bleach method and it really didn't work out so well for the plants.
I have a specific tank that I put my new plants into, along with any new native additions, think of it as a quarantine. I leave them in there for a few weeks and see if anything pops up, if not , then I add them to whatever tank.