Talk:Burrow/@comment-26934445-20170209022357/@comment-71.94.135.148-20170219004025

You can't pen them in. They seem to pick a specific spot to make a burrow, then ignore all other actions unless they are killed or reach their spot, so they'll just keep pushing against the wall forever. You have to let them roam freely in order to produce burrows, hence most people recommending you only drop them some distance from your base.