Rick, try my homemade deer repellent, which deters by taste rather than smell. In my experience, it works very well and lasts quite a long time.
Blend one egg yolk, one tablespoon baking powder and one quart water. The mixture will foam up, so you'll want to add the water gradually. After it stops foaming, put it in a spray bottle and spray away!
It works because baking powder tastes terrible. The egg yolk just helps the baking powder stick to the leaves.
The theory behind repellents relying on scents is that deer don't like being around those plants because they fear not being able to smell predators. Deer in our area probably gravitate to those sprays because they know that's where the tasty plants are, though!
Too bad about those voles, Rosie
Did you see his feet? Looks like it is possibly a tree frog.
