Just another good argument to ban dog hunting. Oops, did I say that? I've had the same experience with dog hunters: for some reason they think they are above the prescribed laws as well as the laws of decent behavior. Overall, they give hunting a bad name and people like that will drive the whole sport into the ground.
Good fences means good neighbors. High fence or even a good goat wire fence would slow them dogs down. Make a small section that folds down and let the dogs run deer right on your property. Keep your gates locked and file criminal tresspass.
When it comes to scent, there are basically two types; those that attract and those that mask. I've tried both on many occasions. There are lots and lots of "doe in heat" scents, designed to attract a big buck into range. I've also used a "cow in heat" scent while elk hunting.
Another scent would almost be better named as a "coverup smell". The main goal is to cover up human odor or mask it. Though I don't believe you can ever totally eliminate all human...