No such thing! My sister and brother-in-law have a summer home in northern michigan in a very upscale area and they have literally lost thousands of dollars of landscaping due to the dear population which can not be hunted in that resort area. As a result, he has put up motion detectors around the house which emit a high pitch sound, he has installed an electric fence around select plantings, and all this hasn't done one damn thing to deter these antlered rats.........
And for the record, here in Michigan there are over 60,000 deer/vehicle accidents a year and the numbers are increasing.........
The damn things are everywhere........Just like all those products that you can spray on your plants to deter rabbits, none of that crap works because they don't have taste buds..........
Try monofilament fishing line. Unless the deer are really running, they hate feeling it on their legs and won’t try to break through it.
I replace my line in my fishing poles twice a season, and have about 900 yards of 60lb test line to put to use, lemme know if they want a box of knotted up used saltwater fishing line.