I’ve tried about 8 different kitty litters. I just started using this one. This is my favorite by far. My non-genius cat is able to use it with out taste testing, without creating an absolute mess, the pellets are a smaller size/not too heavy to bury...
Okocat® Original Clumping Wood Cat Litter - Low Dust, Natural
Stainless steel litter boxes are way more hygienic than the plastic ones. Not too mention less stinky.