I tried BF last year for the first time, and had zero luck. I knew there were bucks in the area, because I was getting pics of them at my mineral sights. I am having a ton of different bucks coming to my mineral sights this year, so hopefully I will have better luck this year.
The Cody Altizer special. Then let the bucks do their thing. Then they no longer become mock scrapes, they become real scrapes.
I use Hunter Specialties active scrape. Got 3 out of 5 mocks taken over by real bucks last year. I've been meaning to try out the Buck Fever stuff this year.
I have had pretty good luck with the tinks power scrape. This may sound gross, but I usually find some doe poo and spread that around the scrape as well.