21 Self-Cleaning Cat Litter Boxes, From Semi-Automatic to Touch-Free

Pet Zone Semi Automatic Cat Litter Box ($146, originally $166)

This semi-automatic self-cleaning litter box has a smart sensor that triggers a cleaning cycle within 30 minutes of use. The angled deflector at the end prevents litter scattering (just in case you're worried about the no-lid structure), and the waste is raked into a covered lined receptacle with a quiet motor to complete the job.