My first cat, Mr. Amber Cat, (RB), was an outdoor loner guy. Once I scooped him up and brought him in, that was it, he had to sty in. Well, like yours, he was very vocal that this was NOT his choice!

I got the leash and harness and got him used to that. We HAD to walk around the building twice every day, rain, snow, ice, cold, did not matter. he would NOT stop yowling until we went. I got one of those retractable leashes. He insisted I stay at the very end. This was HIS time to be a "tiger in the wild," and he didn't want his "mommy" standing too close. If my shoes crunched on the gravel, he would turn and give me a look you know the kind. I learned to walk very quietly! We did this for 8 years! It was a struggle at first, battle of the wills, but he learned he wasn't to go out with out that harness on!