I too was bamboozled into allowing this feline menace into the house. Years ago. Long before we had rug-rats of our own.
Had three of the dumb things for quite a while. Of course, yours truly was the only one to clean the litter boxes, feed and water them, pay them any attention.
One morning, about 5 years ago, one was laying dead on the floor. Aww, well, I'm sure she's in a better place...
A couple years later, another one got sick, and I honestly felt a little bad about that one. Went downhill pretty fast. Something was up in the morning, by the time I came home from work, it was close to death. By the time I got dressed (to take her out in the country and give it a "shot") it had died. Aww, well, I'm sure she's in a better place...
Still got one of left.
Anyhow, keep them in your yard. If that means you have to keep them in your house, so be it. I don't appreciate their gifts in my kids sandbox. Don't appreciate watching them on the fence, eyeballing the bird bath.
Don't care what you do in your house, but if you like your furniture, have them declawed. I'm sure it doesn't feel nice, but I also know that cats are tough, and they get over it in about a day or so.