Try a product called Deer Fence. If you can't find it at a local garden shop, it is available online. The concentrated form is more economical to use buy not cheap. I have deer that eat my lilies among other things. This is the only product I have found that works. It smells bad but the odar goes away quickly. I spray my plants about every two weeks or so with this unless there is heavy rain - then more often. Good luck.