Do not know about the garden, rabbits, squirrels and white tail deer. But the engine bay, I am having some success keeping the mice from nesting and chewing wires. About 10 drops pure extract to about 250ml of water. The Fisher here is a type of marten, can get about 4 times the size of the American Marten. Very elusive and fast. It is our only line of defense against porcupines. Unfortunately when a Newbie from the city moves up here, they never heed my warnings and let their cats out to be consumed. Got to love the country.