Stopping Dog from Eating Cat Poop (with engineering)

The video describes a problem-solving journey to prevent a small dog, Riley, from eating cat litter. Initial dietary and commercial solutions failed, leading to a custom engineering approach using Arduino and Reed switches. The final solution involved a magnetic collar and sensors to control a door, successfully preventing Riley from accessing the litter box.

How did the owner modify the design to ensure Trouble could still use the door?

What challenges did the owner face while testing the door with Riley?

What was the final outcome of the owner's engineering project?