You could contact the bobcat breeder on here and buy a couple to put in the garden.

the LO of one of my previous leases (vegetarian) built his home on the ranch, put in a garden but the deer were wiping it out. He put up cedar stays and then surrounded his garden with deerblock netting. worked like a charm on the deer but didn't slow down the hogs.

DeerBlock Netting

we have used similar on our peach & plum trees to keep birds off the fruit.

I also tried the fishing line as well. Didn't work and was a pain in the azz picking up all that line the deer drug all around my garden.
If a high fence isn't a option, check out you tube on some other fences that deer can't or won't jump. I was going to build one of those until I just took out the problem myself!!!

Ain't quite a smart as the ones down here, right?

That made me laugh this morning...thank you sir.

Anything you try except a high fence will most likely just be a temporary fix. The mothballs will work a few days or weeks, but once the deer realize they are not a danger, they will ignore that smell. Booby trap noise makers like the bird propane guns? Once they realize the noise isn't hurting them, they will ignore them. You can make booby traps that work like a deadfall but instead of capture it just slaps them with the rope, might scare them off for awhile, but the fresh "green stuff" will still bring them in.

One idea that would be easy and cheap is to use the fishing line but also set it up so that when hit, it also makes some noise. Think of tin cans with rocks in them somehow tied to the fishing line.

A good 5' fence has always worked for me.

When we were fencing in our back yard, I made sure to go with 5' chain link around the sides and back, ornamental across the front. Haven't had a deer inside of it yet getting to our small garden plot or fruit trees. I know they can jump it, but they haven't bothered trying.

Rosemary plants might help. or a dog.