My 1st MJ outside grow.But I have massive gardens and have deer in my yard.I Have over 200 varieties of Hostas and the same with Daylilys. Deer's favorite plants. I use Liquid fence and I can guarentee that stuff does work.Well worth the money.
I just set out rolled joints and lighters the deer get so high they forget about your dumb plants and go to Dunkin doughnuts.Want proof? Ever see a dead deer in the road? Where do you think he was going on that road the river??
I would think anything that smells synthetic would scare the deer and other animals.
I have heard of strong smelling deoderant soaps like Irish Spring work good.