My Mom with early Dementia lives with two Yorkies that poop and pee all over her house every day and she never cleans it up. What do I do?

Its time to remove the dogs. Are you sure that she is even feeding them?

Its also time to make a decision, you need to get Mom "in home" care or place her in an AL if she has the money. Like said, if she isn't caring for the dogs, she is not caring for herself. Dementia is very unpredictable. There is no rhyme or reason to it. You never know what a person suffering from it is going to do next. Mom can no longer be reasoned with. She can no longer comprehend. Her brain is dying little by little.

Her inability (not refusal) to care properly for the dogs also signals her inability to care for herself. If I were in your situation I'd employ a "therapeutic fib" that the dogs need to be taken in to get required vaccinations, a check-up and some grooming. Then you take them away and prepare them to be re-homed (and they will need a vet's current check-up and updated required vaccinations anyway to do so). Maybe look for a Yorkie rescue group in your area. When she asks why the dogs haven't come home yet you tell her they are being kept for medical observation by the vet. And whatever other story you can tell her to keep her calm and move things along.

Once you have the dog issue under control you can work on other things, like getting durable PoA in place if it isn't already, and figuring out whether she can continue to stay in her home with hired aids (an affordability and management issue), or whether transitioning to AL is a better option for both of you.

If you have POA it is time for you to take charge before a neighbor or other third party discovers what you have found, and then the local police or another government agency might be knocking on mom’s door.

She's not capable of letting them out in time and doesn't care that there are feces everywhere. Does that sound like "early" dementia?

The dogs are being abused, and Mom is living in unsafe circumstances. E-coli is no joke, and I doubt she's properly washing her hands when she does pick up poop with a tissue.

Time for tough love, I'm afraid. The doggies need a new home.

Unless she’s been content to let this go long before the dementia, it seems she’s past the early stages. I doubt a housekeeper being hired would help, many of them won’t clean up unsanitary conditions like this, especially to be met with the same crap (sorry for the bad pun) each time. Do you have POA to be able to make decisions in your mom’s best interests? It may be time for some tough decisions

Can she afford to hire a housekeeper?

This is really unsanitary and you may have to let it go and call APS in to get any change.

As long as you prop her up she can continue to believe that she is independent and doing fine.

I, personally, feel like the poor little dogs are being abused, they wouldn't live in their own waste if they had a choice, maybe telling her that the dogs will be removed by the authorities will help and a pooper scooper that she doesn't have to bend down and a spray mop, maybe?

Maybe her dementia is further advanced then you realize?