I have a Fox Pro cheapie. I have mouth calls. No apparent success from either as Ive not seen anything come in. If you cant get away from your ecaller your chances for success go down the closer you are.

I have a neighbor 600 yards east, with lots of sheep. I have a year around cold-water spring about 500 yards west . I am patient and often set in my shop with a shooting port open and a rifle on the bench rest anchored to the wall inside. If i hear a yote talking around dawn, I slip out with a big mug of coffee and start glassing. Most times its a lesson in futility, other times its game on right now.
I have killed many singles and several pairs within minutes of each other. I have killed them on carcasses, on the same trails and yes, even taking a dump (3). I have killed them from under 200 yards to 608 yards, a pair actually, first one at 586 next one a few minutes later at 608.
In the last 2 years 18 yotes have died without a call but all at range and me being not visible and very patiently glassing.
Last one during deer season showed on the hill, slowly working his way in and out of the brush and tall grass between roses. I lost him in there for awhile then picked him back up sitting there in the tall grass above but between a couple large wild roses. I ranged him best I could being as I could only see his ears and the back of his head, 355 yards, dead right there from back of the head shot.
Mostly remaining undetectable and able to shoot some distance is what will get dogs around farms, oh, and a ton of patience. Glassing and accurate shooting is bad medicine for yotes.
One more thing, very high percentage shots only, I always wait until they stop or I pass if they are motoring and on a mission.