This a more advanced approach that does require a significant investment of both time and money. (elearningindustry.com)
It's among the more expensive options, but almost certainly has the most advanced approach to getting rid of cat waste. (heavy.com)
The clean yet simple art style is a better fit for this story than any more technologically advanced approach would be; it lends a nice comic book - like air to the proceedings. (themoviereport.com)