I relented and we got a cat. He’s a good little guy, but he does create some ungodly smells. Unfortunately the best place for his litterbox is in an alcove in our lounge. Even with a window open (not possible in all weather) some smells do waft over.
![](https://blog.twig.net/wp-content/uploads/2020/02/IMG_8692-965x1024.jpg)
This presented an excellent opportunity to over-engineer a solution using some electronics, 3D printing, and indoor hydroponics apparatus!
This is the result:
![](https://blog.twig.net/wp-content/uploads/2020/02/IMG_6222-1024x768.jpeg)