2 articles on exclusion zones — guides, reviews and comparisons from the team that measures real lawns.
How-to Robot Mower Tips for Hilly Yards: 12 Ways to Win on Slopes Twelve field-tested robot mower tips for hilly yards: cutting height, wet-grass scheduling, exclusion zones, dock placement and slope-proof mapping from a dealer. 
Customer Installs Navimow X430 vs. Maryland's Steepest Lawn: Annapolis Install The steepest lawn we've ever installed on: gas crews tore up this hilly Annapolis, MD property for years. How an AWD Navimow X430 made it 100% autonomous. 