I love it! My cat took to it with no issues, although I did leave her old box with scooped, but old, litter nearby for about 4-5 days, as suggested in the instructions. Very little litter tracking with the crystals and, what little there is, is easily cleaned up with a dustpan or hand vac. No odor - I change the tray about every 3 weeks with 1 cat & even sitting in the sun (under a window) in August, there's no smell. This thing has totally changed my relationship with the litter box!
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