I’m sorry Padre’. I completely understand you. That’s a lot. With 3 male cats, even fixed, the marking problem happens. I’ve got two on Kitty Prozac after trying every calming collar, spray, room thingy on the market. I do think the Prozac helps. It takes about 4-6 weeks to see a change.
We went to all linoleum floors about 10 years ago. It made it much easier to deal with.
I have one 13 year old dog who usually can’t make it through the night so we started putting down puppy pads. The cats use them too now. (We have 5 boxes). And yes, throw rugs are always trouble.
I have one 5’x7’ rug they allow and don’t soil. I rolled it out every morning and rolled it up at night for a month, just to see if they’d pee on it. I’ve been lucky and I am able to leave it out all the time.
I bought it from a company called Ruggable. It’s got a base you peel the top off of and the top fits in a washing machine. Best rug ever.