I never killed a buck due to scents but have done so rattling and grunting. Most have been killed while still hunting and seeing them b-4 they see or smell me. Just a numbers game and the more time out there the better the chances. Same with rattling and grunting. Try it 10 times and you might not see anything but often a deer will have responded but circled downwind and then snuck off. Once in a while it has worked so I use it as just another play in the book and try it when the conditions are absolutely perfect. My "luck" has gotten much better since switching from a Silverado to an F150.