Apollo had taken to peeing on the upstairs rug when I'd leave him alone and go out. Never any other time that I could tell, just bent because I'd left him. (We have separation anxiety.)
Last weekend Belvak set me up with her dog crate, which is quite large - 4ftx2ftx3ft. I was prepared to spend some time getting Apollo used to it, but he jumped right in and made it his own. I fixed it up with a blankie on the bottom and his little bed. It took no time for me to be able to send him to his apartment and leave without barking or carrying on, and he's not wild when I come back, either.
The crate has solved another problem: him losing his mind when the neighbors or the school maintenance guy is mowing grass.
This morning he began going crazy, barking and running around like a maniac when the mowing started, so I stuck him in the crate and gave him a treat. He calmed right down. Now he's sitting in there, alert and panting a bit, with me sitting next to him to reassure him, you can tell he's still upset about the noise but he's not losing it or particularly distressed.
What that means to me is that I can answer the phone when someone in the vicinity is using power tools and mowing because there isn't some crazy dog making a racket.
Thank you, Belvak, once again!