Thanks for the additional information. You need to sop up any urine there is and then use the enzymatic cleaner to help break down the protein in any urine still left to remove the odor. This can take soaking a little. Bleash is ok for hard surfaces but not always effective in other places.
One thing you can do is put the crate with the door open up against the doggy door so he has no choice but to either go out or sit in his crate. Faced with that decision, he should use the outside. It is important to know that you are cleaning up well. They make special lights that can detect old stains that might draw him back to an area to eliminate.
I would make sure he doesn't have a urinary tract infection. Common symptoms of a urinary tract infection are frequent urination, dribbling urine, blood in the urine, squatting frequently to urinate, strong odor to the urine, inappropriate urination and straining to urinate as well as an increase in fluid intake. A dog with a UTI does not always show all the symptoms and typically displays 2 or 3. I believe you need to have your Vet check your dog out so it can get medication for the problem if your dog is displaying 2 or more of the above symptoms..
I'd go back to crate training him. The crate needs to be only large enough for him to lay down. Any larger and he'll eliminate in the crate. This will teach him to hold his urine and bowels until he can go out. The longer he can hold it, the better since many smaller dogs do not like to go out on their own. They frequently want their owners to go out with them.
You might also ask your vet to check for disc issues. Some long backed brees have disc issues which can lead to a loss of feeling in the rear area which can cause a bit of a problem with urination and even defication. The dog may not realize they are starting to eliminate until it is already too late to make it outside. both shih tzu and poodles can have disc issues. You can read about these here:
Now you can get a belly band. It can help with a dog having problems with incontinence.
You can see these here:
You might also decide to set up a small area inside for him to eliminate. You take a large pan like a kitty litter pan or even a baby swimming pool. You create a platform frame with wire on top. Place newspaper or other absorbent material such as wood shavings under the platform and place sod on top of the wire frame. Since it is grass, your dog will go on it. You can remove solids and can spray the urine so it moves through and down into the absorbent material underneath. This lets you use the same piece of sod for a while before needing to replace it. You do need to replace the material under the platform.
I recommend sod because it keeps a dog eliminating on grass so they don't get used to using floor or carpet.
I hope this information is helpful to you. If you would like any additional information or have more questions please don’t hesitate to press the reply to expert or continue conversation button so I can address any issues you still have . If you do find this helpful, please take this opportunity to rate my answer.