[yorkietalkjilly]

I'd get him checked out for a UTI just to be safe & then just start over from the start with him. Clean all those places he's marked with the special cleaner and bar him from those rooms or areas for a good long while or physically watch him every moment so he can't return to those areas. If he's not ill and can't help it, then for
some reason, he's gotten it in his head it is good to to in those spots and that's right in his head. So, block him from those places with large cardboard boxes, fences, whatever & start over with his training.

I take mine out every 15 - 30 mins. until they "go" when I am first training for at least a whole month and then watch them like hawks if they don't go. Inside, I watch for interested sniffing or looking around or even the beginning of a pee stance and out we go if I see it. Eventually, this works. They go outside, they get a lovely treat and praised silly and a lot of celebrating and then back in the house, watched constantly until crated if I have to leave the room, even for 5 seconds. It's hard to keep up but being taken to their "potty" spot outside that frequently they eventually get the idea.

If you are using pee pads, take the dog just as frequently to the potty pad until he "goes", treat, praise and watch, watch, watch or crate when you can't watch. If he yowls a lot in the crate, be sure his time in there is limited to just short periods and throw in some treats before putting him in and from time to time while he's in there, along with kong toys filled with goodies, toys he can chew on or keep busy with, etc., until he begins to accept that during this time, he should eventually just relax & accept this is what he must do at times.

Most dogs, given enough maturity, will relax & accept the crate if you don't keep popping in and looking at them or telling them to be quiet, feeding their excitement by doing that. Some begin to enjoy the crate as their safe, private den if they know when you are home they won't be isolated there for a long time and are taken outside or to the potty pad as soon as let out, given a little treat for being in there when let out and praised for being good.

A good, regular feeding and exercise schedule with frequent potty breaks is your best bet when housetraining, too. That way you come to anticipate when your dog is going to need to "go" and can be anticipating it.