i got this from animal planet an onion very hot peppers a garlic clove a few squirts of anti bacterial hand soap chop and put in blender, add water, blend, strain mixture into spray bottle. spray on plant. every couple days spray. put a bar of irish spring soap next to the plant. if a deer takes a bite he will be unpleasantly suprised. and never come back. side note, if you dont add the hand soap you will have to spray every day. if it rains it will wash off, so spray after rain