We have Roe deer, and I have found Grazers good too.
Even better is to find things they don't eat. I have been trying for a few years now and the list is getting longer. Try primroses, pieris, alliums, lavender, lupins, hydrangeas, daphne, euphorbia, hellebores, daffodils, centaurea, ....
A good guide is anything toxic to humans.
I plant a sacrificial offering and if it is still standing after six months I plant lots more!
Does anyone have any others to add to the list ?