Works great in open spaces
With a bit of patience with establishing Zones and No-Go areas and keeping the grass cut regularly, the LyMow has worked well for me. I found it a bit hard to define Zones initial as you have to drive the mower using on screen joysticks as the left/right control is crisp and you tend to over steer. There is a Zone-Edit mode that allow you to clean up the perimeters and that helped a lot. One other note is that you need to not put sharp tight turns in the Zone edges and the mower has a pre-programmed pattern for doing a 180 degree turn and in a tight space, this turn pattern can get the mower in trouble and potentially it may run over things you wanted it to avoid. The spart avoidance mode does well navigating around trees and other tall obstructions, but may not work with small trees, this is where you define No-Go Zones to help it understand what to work around.