drop comments

I want to clear the database from comments rejected or marked as spam. Neither type is shown, but for som reason stored in the database. There are a few valid comments but they are of no importance and can be removed in the process.

Is it safe to just delete the tables? If so, what tables? If not, how do I proceed?

I’m not yet on version 2. I’d like to clean up the db first.

best regards
Lars Farm