I agree with Hoyt. I have shot a bunch of deer with a decoy both bow and gun. Mine gets sprayed with scent remover sometimes 2-4 times daily and certainly before and after I touch it. I drench it and sometimes use attractant scent, not often. I have also rigged a single antler that seems to trick them occasionally as well. Like any decoy sometimes they work, sometimes not. Does will often be spooky, but come back numerous times.
Have a buck posturing for it at 20 yds and there ain't nothing like it. As mentioned above it focuses the deer's attention on something but you.