First of all, we improve safety by inventing the infrared ranging sensor. Some experiments show that the Litter Robot can only possibly identify a cat over 2.3kg on a hard floor, and over 3.5kg on a soft substrate such as a carpet, so it is entirely possible that the cat may be caught by jumping in while spinning. For our design, anything that enters the chamber will be detected and protects your little friends. Secondly, we save cat litters, which is achieved by a mass amount of experiments. We did several sets of trials to determine the shape, size, strategy, and speed of rotation. For example, we used a honeycomb-like hexagonal hole, and as far as we know, Litter Robot appears to have used a diamond-shaped hole. Thirdly, less malodor. We should be the first smart cat litter box to introduce a negative pressure system. The system consists of an exhaust fan and a carbon filter. We were working with the manufacture, adjusting the parameters of the manufacturing process, and results in our exclusive carbon filter. (Not the plastic, but the carbon particles inside!) Forth, silence. The pivot points of the spherical chamber are made of self-lubricating material to reduce noise. As we mentioned earlier, the motor is also a custom one designed for a long lifespan and low noise. And... we are easy to clear, you can just lift the spherical chamber for cleaning without any extra steps. And... more.