Q.What’s Eating My Brugmansia?
Something has been eating the bark off the trunk and limbs of my Brooke Mancia. There are tooth marks. Possibly rats? What can I do to save it?
Certified GKH Gardening Expert
It does seem like rat damages. Cages and baits can work, and that will be your best option. The only other thing that I would recommend is deterrents. They will be deterred by similar things as we would. Capsaicin, or pepper extract, is one thing that can keep them away temporarily.
https://www.gardeningknowhow.com/special/organic/do-hot-peppers-deter-pests.htm
https://www.gardeningknowhow.com/plant-problems/pests/animals/eliminate-rats-in-gardens.htm