It's possible to bulk import geofences on WCA. When you bulk import geofences, it will automatically create a site associated with. But when you try to bulk delete it, it's not possible to delete the sites (zones, beacons and attributes) associated with geofences. Sites, for example, must need to be deleted manually. For customers with a large number of geofences, it's really hard to delete everything associated to a geofence.