We have a Roomba for our home. It’s about 6 years old. I used it (note the past-tense) regularly and it was fun to watch it “do it’s thing” at first. It is the animal model because we have a dog (golden lab). But even with that model I found that I had to constantly clean out the hair in order for it to work, so I couldn’t leave it to do its’ thing while I’m at work, but if I’m there to watch it, it does a half-ass job.
I wouldn’t recommend it if you need the carpet to look REALLY clean. It might work to use that first while you’re doing other cleaning and then go over the areas with a regular vacuum that don’t look great.
I like the concept and interested in checking out the Dyson version if that works better.