Just rip them with you're hands. I don't know how old your dreads are so it's hard for me to give advice. If your dreads are still locking don't put anything in them, it could fuck shit up. Just rip the congo's apart. It can hurt like a bitch but it gets the job done. Beads and other shit are for when your dreads have matured a bit.
I wouldn't put anything in em man. Like what's said above, just give it a lil bit and when your hair becomes all stuck together as one just rip them apart. But there ain't nothin wrong with a lil congo here n there. Unless you have a strict no congo policy.