I live 1 mile off the road in the middle of the woods and have many deer roaming through. For the last two years I have found VHS tape effective in keeping deer from eating my azaleas. I string the tape from tree to tree where my azaleas are underplanted. I put this up in late Fall and take it down in late Winter/early Spring. The tape flashes and shimmers with the slightest breeze and apparently catches enough light at night to keep the deer at a distance. Before doing this the deer would eat all the flowering tips of the azaleas through out the winter thus no flowers in the Spring. I have also used egg and water mixtures which are effective but have to be reapplied frequently.