What is a one-sentence summary of the following article?
As a dog ages, it will have less ability to hold its bladder. This means that your dog will need more frequent bathroom breaks than it did in its younger years. For example, a senior dog will not be able to stay home all day without a bathroom break, even if it used to do that when it was younger. It can be difficult for a senior dog to adjust to a new bathroom routine. If it is used to going to the bathroom at the same time every day, its body is likely to continue that routine, regardless of whether you are there to let it out. If your dog is having a hard time holding its bladder, it may be time to install a dog door or dog run so that your pup can go to the bathroom whenever it needs to. This area should also be easy to access for the dog, as a senior dog with mobility issues may choose to go to the bathroom inside instead of going through physical discomfort to get outside. If your dog needs to go out more often but you cannot be home to do it, a professional dog walker may be the solution. You can simply hire someone to come at midday on your long work days and walk the dog. Talk to your friends and your veterinarian for recommendations of local dog walkers that might be right for the job. Make sure that the dog walker comes with recommendations from other clients, which will help ensure that they will be responsible when they enter your house.

Summary:
Let your dog outside more often. Stick to a routine. Provide constant and easy access to a place to urinate. Hire a dog walker.