For a bit of crusted ice on top of snow it shouldn't be a problem, say 1/2 - 3/4" thick. If it's too much your shear pin will go. I've chewed through that with no problem, but I have a single stage and the auger rotates much faster so it pulverizes the ice. Your first stage should break it up into small pieces and then your second stage should be able to pulverize it; as long as your blower isn't one of the newer ones with a plastic double stage. On a side note; it makes no sense why mother JD moved to a plastic second stage . . . other then saving on production cost and still charging the same to the end user.