I'd like to pick the communal landscaping brain. My house suffers from the "typical 80's tiered railroad tie garden" syndrome. We're aiming to remedy that ASAP. What's the most efficient / safest way to remove ties and the 8" lengths of rusty rebar that's holding them in the ground? Some of the ties have rotted pretty thoroughly, so those have been removed, but many are largely intact. My only minor success with pulling the rebar has been with locking pliers, but as most of them are rusty, the rust generally just ends up flaking away and there's not a good surface to grip on.
Any suggestions are greatly appreciated. We're thinking of taking this on over the long weekend. Thanks!