Very old pets are safer and happier in secure surroundings, out of the way. Movable exercise pens and crates can be set up in the house where convenient. Not fashionable but sane.
So, when
- you have been outside with your dog to see that it has relieved itself
- you have completely removed collars and accessories from the dog
- you know the dog is not hungry or thirsty
- the crate is clean and comfortable
Have all your equipment close at hand (set it where you will be watching TV or a movie, or doing dishes, or cleaning or something easy, not taxes or hard stuff.
Equipment: Dog crate and bedding, old magazine, baseball hat, leash and collar.
You will be there to tell the dog to be quiet when it starts complaining about being locked up. Tell him in no uncertain terms to be quiet, slap the front of the crate with the hat, the magazine, your voice, and make the dog be quiet. If you cannot, then take him out on leash and collar, to the door, directly outside to do business, note yes or no, and go back to the crate. Pass the water dish on the way back to the crate. And.. start over. If you cannot make a dog be quiet in a crate, you might have mambypambyitis. Cowboy up.