How to Clean Out the BuddyPress Activity Stream
When creating a BuddyPress site you will probably do lots of testing before officially launching. If you’ve filled up your activity stream with test comments, you’ll want to dump it before opening the site to your community. There are a couple of ways to do this.
Option 1: Empty the Activity table in your database.
This option involves getting into your database. Find the wp_bp_activity table and empty it.
Option 2: Empty all Activity entries in the Dashboard.
Another way to delete your activity stream items is to navigate to Dashboard >> Activity. Check all of the items you want to remove and then use the dropdown to select “Delete Permanently“. If you want to show more items, pull down the Screen Options tab and increase the number of activity entries displayed on the page. Please note that this is only available in BuddyPress 1.6+.
This option may be easier for you if you’re not comfortable with phpmyadmin or don’t have access to your database. If you need to delete thousands of entries you may want to use the first option, since it will be only one click.