Tip: You can plan a regular "bosh -n deploy --recreate" on each of your deployments, typically once per week. Run by Concourse, ou by a mere cron in your bosh-lite VM if it's just development.

Notice: Growing warden containers might indicate issues with growing log files. Missing log rotations in your BOSH releases or issues in your deployment settings that make error logs grow abnormally. You should question that too.