H&L Workman LLC. DBA Crawl Space Ninja of Columbus, OH H&L Workman LLC. DBA Crawl Space Ninja of Columbus, OH Search | Advanced Search | New Members | Coupons and Discounts | All Categories   Advertising & Media >> Remediation Services H&L Workman LLC. DBA Crawl Space Ninja of Columbus, OH 6395 Howard RoadSunbury, OH 43074 | map | directions (614) 204-1097 Visit Site Need to update your categories or expand your listing? Or want to learn how your business can become a part of the Chamber? Contact us at membership@columbus.org for assistance.