On separate sectors, yes, but if they share a border, you'll run into weirdnesses. At least with Landroids, the boundary cable only has electricity running through it when the robot is out and about. This means, that whenever it's at home, the boundary cable is invisible to other robots out there. This is primarily a good thing. If you have your Landroids running at the same, you might experience one of 2 sorts of interference whenever they reach the boundary with 2 adjacent cables for different bases: 1) Your Landroid might sense both cables but realize they're close enough to be crossed. Now you have 2 Landroids mowing an area where you should only have one, and when either one of them gets tired and goes home, the other one will wander off and possibly never be found again. 2) Your Landroid might sense both cables but be unsure why their frequencies don't quite match. The poor little robot will stay confused until it runs out of battery, or the other robot goes home and the other boundary wire turns off. Your robot might also just act normal - this is the case if the wires are far enough (20-something-plus cm) from one another.