Will a mint oil solution spray deter deer from eating my roses? I have tried the Liquid Fence deer and rabbit repellent. It seems to wash off in the rain. We live off Germantown Rd. The deer population has really increased. I am trying to find a simple homemade repellant that helps. Thanks. Jeanne Prier
Washington County Oregon
Thank you for your question. There is little scientific research on this topic, but here is one Extension article with a couple of ideas: https://extension.umn.edu/central/protecting-plants-deer Anything applied on the plants will wash off. Long term forecast is drier. Good luck!