A bleach dip, one part bleach to 19 parts water, dip for 30 seconds then rinse in a bucket of clean water with dechlorinator. Don't dip any sensitive plants like mosses.
Patience is the key word lol. I ended up "trying" to go through it strand by strand but there was just to much of it. I've gotten most of them I think. I've not seen any worms and only 2 baby snails which i promptly scooped and sent into the exile tank..It takes patience, but picking out individual strands of mosses for growth in individual containers (pickle jars) works well.