I am a fisheries habitat biologist in the state of Oregon. We work with
private landowners interested in reestablishing native vegetation. To
do this, we lay all large weed barrier tarps in which we plant into.
The plants are growing unbelievably well, but the mice are killing a
good portion of them by girdling the stems near the ground.

I am wondering if anyone knows of an effective repellent that can be
used to stop this from happening. Please realize that I have literally
thousands of plants to protect so something very labor intensive is not
an option for us. Thank you for any suggestions!

RM