It's been bad. I use two machines to keep my keep 3/4 of km drive way open. It's 45 feet wide in spots too. Typically blade wide area's then blow it away. Works well.  I checked tractor hours almost at a full season of hours on equipment so far. I had to call My Buddy a few times too because I can't be in barns and blowing snow too sometimes. He helped me for about 12 hours I got part of bill but not all of it. 

I was in New Liskeard at the Waterfront Inn in 2003 and woke up to -30 temps. I was riding a '97 ZRT 800. The thing was a pig to pull over in warm temps and rope was locked solid on this day. Well, 3 of us pulled on the rope, ended up pulling the plugs and hitting them with a lighter, gas down the plug hole. Finally fired after 20 minutes. I thought I'd teach her a lesson and I ripped wide open across the lake to the trail. It ran ok the rest of the day but the next time I rode it she just wasn't right. Tear down showed she'd had a crank bearing in the bottom blow apart, went through the cylinder destroying the piston and cylinder.....lol  Sold it for parts.   I was a bit more gracious with warm ups after that.

I feel for you brother. Its been a tough winter and its only the first week of Jan.   I sledded Sunday with my buddy who plowed for me for 5 years. He said "fawk, I'm glad we quit when we did. This winter would have killed me."   I miss plowing but this year its been enough just taking care for my own property and my mother's.     Oh, and I love driving by my old lots and seeing how terribly they are been cared for.  

I don't use salt.  I use limestone for grit.  Keeps the ice pack on the driveway, and stones off the lawn.  I also have a blade for my front end loader with serated teeth on it that I use as well.

Yes there is a salt shortage so we have to plow more so we use less salt.   I suggest using limestone screenings to provide grip for the trucks. Works well for our laneway and driveway. May be cheaper than salt as you don't have to melt all the ice. Your grass may also be happier in the spring so you can use that Zero Turn to its full potential!!😂😂