My house doesn't have a basement either. I put the cat litterbox in the livingroom under a computerdesk,then use a borad to 挡住大部分 只留 enough 的宽度让猫出入。I use 不带眼儿的铲子 to remove all the wet and it's 附近的 drysand。 I clean the box twice daily. There is no bad smell at all. My cat is very smart, she covers very well and after she even pats her paws against the wall to get rid of the sand inside her paws. I put her food tray in our dinner room.