Potty Training older dogs is more likely difficult than training a 6 month old puppy.
I have a first hand experience on this, trust me.
I have no idea before that I could train a dog to pee or poop to a location or spot where I would want him to.
I got myself a regular male breed shih tzu two years ago and I named him Bruno.
Bruno was a very cute little pup when I bought him and without any hesitation brought him home and took good care of him like he's my own child.
I used to clean Bruno's mess for couple of months because that's the way I pamper him, just like a baby.
Until I can no longer stand the stench of his dirt.
My house was like my dog's bathroom.
Until I decided to do a dog potty training on him.
I read some articles about this on the net until I stumbled on a very effective method and which was also advised by my friends.
It's easy and very basic.
Bruno has been unloading in almost all areas in my house.
Usually dogs pee or poop wherever they smell a spot that has their own dirt on it.
I did cleaned those spots and bought something from a pet store that would neutralize the smell so that Bruno won't unload to that area again.
Now, every time a dog eats or drinkyou should take him outside after 15-20 minutes because this is when they normally unload.
So, I patiently took Bruno 15-20 minutes right after he's done with his meal.
A good time to take him outside also is when he wakes up on his nap.
I had Bruno's last meal at 7:00pm so that he won't urinate or poop during sleeping hours.
For a month I did these basic steps and right now Bruno has been potty trained.