I have had coyotes urinate on my M-44 signs. New and defiantly not natural. But I have also seen where they (This word is unacceptable on Trapperman) on garbage also!

I’ve found that in and around recently logged units (5 years or less) wolves will happily pee on a beer can or 5 gallon oil bucket because they’re used to finding them so its not foreign to them. Just something to lift their leg on I guess

This spring I decided to do some testing with a post set. I placed a post along a known travel route. I placed it so it was off the trail a couple feet but sticking up so it could be easily seen. I put a dab of gland lure on it and placed a camera.
In two weeks I saw zero coyote come into the camera zone. The deer were very skiddish of this new object. After 2 weeks I knocked it over and tucked it into some grass tufts. The coyote found it and checked it out within days. A month later, without adding or freshening up the scent, coyote still visits it.
I thought it interesting how a new object was avoided but a hidden one was investigated. I also learned that the smells last longer than I thought. I just found this whole testing interesting and fun

Keep in mind once coyotes find an intresting odor they usually mark the area and that will keep them intrested in that spot. Not saying the lure isn't still detectable but because of the coyotes regularly marking that spot it kind of becomes a community sign post.

Thank you guys for sharing your experience and knowledge. I had not put it all together.

I've seen the dang things ignore every set I had and then go nose an empty potato chip bag the loggers tossed out all over the place. Since the potato chip bag was in a fresh plowed road you know it was fresh with plenty of human scent on it, but they were used to the loggers tossing stuff out and were comfortable with it. Now if you were to toss that bag out on a ridge a half mile from a road, I bet it would be a different story.

Canines will at times check out new objects, and at other times avoid them like the plague. So I usually try to use existing objects leave no disturbance, I figure that the ones that will check out a new object I place will probably check out that interesting smell by that rock that has been there their whole life also. So I've a better chance of catching them all if I leave the area natural. An exception to this is snow, I will often make new snowmobile tracks and set right in them, yeah it is freshly disturbed, but most coyotes or wolves will take the easy route on the packed trail (there are exceptions, but I usually also have sets that aren't in the trail to pick them up).