No experience with this particular system but I've had groundhogs in my greenhouses defoliating cucumbers regularly, one even decided to take up residence inside. The setup may appear as a salad bar to them so don't assume it will work.

I once had similar problems, but no deer. We ran a chicken wire fence around that garden with two strings of electric wire 3 inches apart at the top. That kept everything out but the crows. The bottom was buried about 5 to 6" deep.

If you like dogs get a medium size one, as that or a rifle are about the only things that'll keep groundhogs away. The few groundhogs we had didn't dig under the fence. But others may.