There is some HEAVY pressure out in that area.
There are a LOT of predator hunters in Spokane, and surrounding area, and most if not all know where all that public land is. That's ok, I enjoy predator hunting too, and understand others loving the sport.
If you hunt those areas, be prepared for a bunch of educated dogs. If they see you in any way, or hear a sound they will be gone. Don't think you are getting into a "new" area, EVER. You will be hunting Hard-learned dogs, that will be hard to call.
I've spotted those dogs at 1600 yards, they call back to me, and run the other way. I've walked in for hours, been in the middle of those areas, most likely where not too many folks get, and still have the same result.
Those areas might be best on a snowy day, using the "Spot-and-Stalk" method, not doing any calling at all.
Walk in, NO TALKING, no not None. Keep your eyes PEELED, use bino's, and sneak within range-if you can. Otherwise you're in for a lot of frustration.
That's a part of predator hunting too.
GOOD LUCK!