We have five (!) cats. We had seven but two have now gone over the rainbow bridge (and I miss them). The cat litter we have used for the last 12 plus years is:
Cat's Best By Oko plus manufactured in Germany, order through Amazon, Pets at Home, Zooplus etc
We tried (I'm beginning to sound like an advert) lots of different cat litter but this clumps fast, low odour, and really controls nasty niffs. It is a bit more expensive - but also lasts longer so works out the same, if not better, than other cat litter.
Our five are indoor/outdoor cats. We have the garden enclosed so they can't go anywhere else (and no visiting cat can make a surprise visit). This also means they have access to the great outdoor cat box that Mother Nature provided. They have free access to our laundry room where their beds, food and cat litter is, and are allowed into the rest of the house when they demand. In the good weather they can be found outside in the sun, a pair of sunglasses perched on their heads, a Pina Colada in paw, taking in the rays.
I don't want you to think they are pampered pusses!