Let's be honest: cat litters can get funky pretty quickly and even if they don't, you have to change them every few days so that your place doesn't smell. That being said, there are quite a few new ways of keeping your kitty litter smelling like roses. There's nothing like keeping those funky odors under control, while still keeping your kitty cat happy.
When I adopted my kitten Yoda back in 2008, I had already a French bulldog named Spike. I wasn't looking to get a cat, but this kitten approached me on the way back from walking Spike, and I just couldn't leave her outside. Her mother had died and it was up to me, even though I wasn't much of a cat person. The next few weeks included me given her a bottle every four hours, because yes, she was that young (less than two weeks). Training her wasn't a problem, but oh my, the funky odors that stem from her litter needed to be addressed immediately.
1. Fred's DIY Self Venting Cat Litter This DIY project was created by a reader and we have to say that we're impressed with the ventilation aspect. We need this kind of thing as soon as possible in our place!
2. Tackling Litter Box Odors This other DIY solution is also a good way of getting rid of all of those annoying smells. Also, building this isn't that complicated.
3. Automatic Cat Litter Boxes This roundup includes four of our favorite automatic cat litter boxes. They make a good job of managing cat litter, which is great because we aren't fans of cleaning those litter ourselves.
4. Bionaire Odor Grabber Litter Box At $45, this litter box sits in a sweet spot. It's not overly expensive, so cat lovers can give it a try to see if they will be able to manage the odors of their cat litters. This is basically an air purifier that sits on top of a cat litter.
5. Litter Robot We reviewed the Little Robot a while ago, but it's still an interesting, albeit pricey, option to manage your litter box. There are two issues that we have. The initial price of the robot is expensive ($340). The other problem is that your cat might not take to it. However, if it works for your home, then you've got it made.
(Image credit as linked above)

White Enamel Flatwa...
We are currently toilet training our cat on the City Kitty. Its going very well - though it does take time & an extra toilet during the training period. Eventually no litter at all!
http://www.citikitty.com/
Or . . . you could just, like, empty the box every day?
Exactly! I clean the litter boxes once a day and swear by Dr. Elsey's litter products.
We use flushable corn litter, and it's pretty good. Empty the box once a day and it doesn't really smell.
That said, the photos from the Litter Robot box still make me laugh when I see them.
Reminds me of the Apollo Lunar Lander!!!
I think these are more applicable for those of us who have cats that aren't satisfied with once, or even twice a day cleaning. In my case, one of my two cats goes down the side of the box so everything sticks. The other one takes care of the center. To clean the box properly, I'd have to toss all the litter and scrub the box every day - not just scoop like most people. It's actually cheaper for me to have the litter robot, which cleans the litter before anything sticks. Thank god neither of my cats were afraid of it.
Cat's don't like covered boxes.
We clean our boxes twice a day and it still smells.
The photoshopping in number 3 is atrocious.
And we have a bunny, but we have much the same problem. In the end we started buying wood shavings from a local furniture manufacturer. They're made from fragrant wood so it overpowers most of the smell from the wee, and they're about a tenth of the price because we're using a waste product.
This is what I use to use but I am also currently toilet training my cat. Thanks for the link Anna!
https://www.clevercatinnovations.com/top_entry_litterbox_order.aspx
This box you can get at any major pet store. It's covered but not. They make liners but they were a pain and got torn on day 1. I rigged up a way to use the liner only on the bottom half of the box with some cardboard to fix this. Love this litter box and my friend is very excited to inherit it for his cat once Chewie is toilet trained.