Well before I start asking questions, I would like to be sure your dog doesn't have some sort of physical problem. Once you know your dog is ok from taking him to the vet, then here is what my resources and advice would be:
First, I would ask if you are cleaning the spot in front of him.
This is a no no. Never clean up a spot while a dog is watching.
It will be likely he or she will do it again if you do it where the dog can see you.
Second, I would ask which cleaner you are using. Only the enzymatic cleaners can get up the scent left behind that only the dog can smell.
Third I would ask if your dog is neutered. It is one of the kindest acts you can do for an animal to have them spayed or neutered. Their brains can never relax when they are intact.
After the surgery, the spay or the neuter, it will take a little bit of time, for the behavior to stop. The remaining chemicals that are still in their body have to get out of the body and they have to heal and relax, and realize their life is so much better.
If you would like to look at or order a drfostersmith catalog here is their address. They not only sell great products, even though you can find the enzymatic cleaners at Walmart, but along with their catalog products they a have educational articles, and the pictures are adorable.
Here is the link: http://www.drsfostersmith.com/
Also check out my favorite dog training site at: leerburg.com
Here is their house training index of articles:
Your dog seems to be marking, although I could be wrong. I would suggest you get a wire crate and start over from the beginning on letting him have time in the house. I would check out the article on crate training...,it is really a great thing, and also rewarding a dog's behavior with markers:
Here is a list of leerburg.com's free podcasts:
Here are some more informational question and answers articles on crate training:
Don't forget, that if all else fails, get a little wee wee pad. They can be found i the dollar section of the grocery stores or you can make them with newspaper. I like the pads better since they are so soft.
Some dogs get arthritis and don't always like to go out in wet weather or ever move at all.
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