Here's why:
* Cedar's strong scent: Opossums have a very sensitive sense of smell. The strong aroma of cedar can be overwhelming and irritating to them. It might even deter them from using the area as a nest.
* Potential toxicity: Cedar wood contains aromatic oils that can be toxic to some animals. While there's no definitive research on the effects of cedar on opossums specifically, it's best to err on the side of caution.
* Alternative nesting materials: Opossums are known to use a variety of materials for nesting, including leaves, grass, cloth, and even old blankets. These are much safer and more comfortable options.
If you have opossums in your area and are concerned about their nesting habits, you can try to provide them with alternative, safe materials. You can also consult with a wildlife expert for specific advice on how to encourage opossums to nest in areas that are less problematic.
Remember: It's best to avoid using cedar litter around opossums and other wildlife.