Best advice I could give anyone about your topic..... elimenate your scent, use plenty of cover scents. As the other guys have told you, the can (in my opinion) is the greatest invention to-date. I called up a real nice 8 point last year (and stuck him), but it's only good on pre-rut and rut. I tried it last winter (Jan) on a good 12 pointer and he just turned and walked the other way.
As far as the attractent scents go, I've never had any luck with them. They seem to attract hunters not deer (in my opinion). Just alittle FYI, I'm fortunate to hunt 100+ days of my 145 days of Ar. bow season