@edgarblythe,
My last place had a great side yard (oh, I miss it) and I landscaped it with raised redwood 4 x 10 beds with some gravel paths, and left the rest of the yard a work in progress, many shrubs/perennials that grew nicely, a couple of kinds of hedges, some grassy patches that pre-existed, sort of a mix of cottage garden with some formality in the middle. Overall, I added 14 trees, but not in that side yard area (there was already one gorgeous japanese maple). Pacco always headed for the grassy/weedy area, settled his body in deposit stance, and then "dug" with his back feet to cover the deposit. What a dog!
Here in Albuquerque, I think of him as a dog out of water, like me, a fish out of water. Too damned hot, he woofed and I agreed. Plus, he was a corgi well used to corgi weather (that northern cal town and Wales). Again, he found the small back weedy patch that I never have 'fixed up' but tried to keep stickery weeds away from, to use for fecal deposition. I don't now remember him doing the covering business here in sandland. Mostly he lounged just outside the back door if the temp wasn't sky high or way low, when he wasn't in the computer room or kitchen.
Years later, Katy came to live here. She just about never pooped on the concrete, nor did the Pacc, all in the sand area or very close to it. No covering maneuvers by her.
Both of them were great at letting me know to let them out of the house. Pacco caught on right away after he came to live with me to either nosing my knee or nosing the bells from India at the back door. He nosed the bells at the front door only in anticipation of a walk down H Street or a car ride. The poop bells were at the back of the house.
I'm trying to get rid of my clutter et al, but those bells are staying as long as I do.
For both of these dogs, I take them as already having their modes operandi when I got them, their own instincts plus likely some training by those before me, with a bit of nudging by me. Pacco was either nine by the first vet (a replacement one that day), and after his teeth were cleaned, maybe as young as six, by his Vet in Place. Katy was eleven.