You want something that neutralizes the odor, not covers it up. I stay away from all scented litters, partly because I have respiratory issues with any perfume myself and don't want to subject my kitties to that. The best clumping clay litter I've found is Special Kitty Multiple Cat (Walmart brand). It can be a little dusty, but not as much as other litters I've tried, and has excellent odor control. Recently I've switched to the Blue Buffalo litter that's made from walnut shells. No dust and the odor control is even better than Special Kitty. It's more expensive but lasts quite a bit longer so I think it evens out in the end.Hey what is the best one to use to cover the scent of a cat in the litterbox that ain't expencive cause I'm tired of the smell when I clean and I'm afraid that when I get my own place the landlord would have that as a condicion