If anyone has a problem with deer eating their lilies, I highly recommend this device. We've had it down protecting our raspberries and lilies and it's doing a wonderful job. I know it's working as the ground is wet, and some raspberries that have obviously been pulled off were dropped.

https://www.amazon.com/dp/B000071NUS/

Oh, and wanted to add. This is in no way an advertisement for this product, it's just something I've recently found that works well for me, and I know a lot of people have deer vs lily problems.