We have three cats and use the breeze litter box system. It's actually pretty interesting as the pellets act as a desiccant drying out the cat poop quickly so it doesn't smell. The pellets in turn don't absorb pee so it drains down into the pad below. The poop also tends to stay near the surface of the litter which is handy when deciding if it needs to be scooped. In the 8ish years we have used them this is what I have found:
- Less smell compared to traditional litter boxes
- Doesn't produce the fine dust and gravel
- Significantly smaller than a litter robot
- The pellets last so much longer. We refill the pellets about every 1.5-2 months
- You can get multi cat and scented pellets/pads
- The downside is that you have to use their litter and pads.
- A starter kit for box, pads, scoop, and pellets is about $60
- Pellet refills are $15 and a pack of 8 pads is also $15
- I would guess it's around $15-$20 a month for a cost for a single box (1 box per cat)
- They have an open, hooded, and large format box (the prices above are for the standard sized boxes)
We change the pad about once a week and scoop every 2-3 days. That's partly because we have three boxes for three cats. Even with one cat it's unlikely to need attending to every day. My cat once had some really bad diarrhea and it actually handled it like a champ. It ended up clumping like traditional litter and was very easy to scoop out. No litter system is 100% smell proof but unless you don't change the pads, we really don't notice it.
https://www.purina.com/tidy-cats/breeze-cat-litter-boxes
Previously we used the Roll and Clean which was super easy to use. You basically roll it on it's side and all of the clumps get caught on a grate while the fresh/clean litter passes through. When you roll it back upright, the clumps fall into a tray which you slide out and dump
- The upside is that you can use any kind of clumping litter so that can cut down on costs.
- Cats can still track that litter out of the box so it's best to use a litter trapping mat in front of it.
- If you don't keep the area around it clean, when you roll the box over it can crush any litter pieces on the ground turning them into dust.
- Smell is definitely more noticeable compared to the breeze system but less than a traditional cat box
https://www.omegapaw.com/products/roll-clean-litter-box.html
If it were me I would choose one of those two systems before a litter robot. They are nice but very pricey and I have heard similar stories about cats being afraid of them. Even just the noise of it turning would freak out one of my cats. They also take up a lot of space.
I'm in the same boat as Ryan in that I think this is a good opportunity to teach personal responsibility and chores for kids. I always wanted a dog as a kid but didn't get one until I was older (parents got me a hamster instead and damn that thing stunk up my room). Having owned a small pom, looking back a dog would have been a lot more work. Cats in general are pretty self sufficient. We travel a lot for work and all we have to do is pay a neighborhood kid to come by once a day, feed them, and change the pads/scoop as needed. In the past our dog either went with us or had to get boarded. Cats kinda take care of themselves, don't need to be walked, and are generally not going to tear up a house while you are away. Plus on the off chance you get saddled with the care of this animal, less work for you.
Either way I think Texags rule dictate that you post a picture of the cat so we can see it. I think that is the minimum fee for advice in this situation.