I use minerals in june , 3 months before season in 4 of my 6 treestands i have I tried all brands from apple crush ,salt blocks and pellets and deer cane last one I buyed on performance archery and I tell you nothing work for me , I do it to try to see what kind of deers was around, all pics I have squirrels , racoons, some birds and a deer fawn.
If you hunt laguna area you find many of those on the area and I dont see many guys there killing bucks, that stuff is not work in southern califonia, all so not for me.
My best bet all the time is make fake mock scrapes with deer urine before season thats work 200 times better .
Just see if mineral is there when you back, if is more all the time that guy is feeding deers if is not more sure deers dont like it .
I recently see a post here about a blind with salt rocks, man i was there las saturday and now was 3 blinds 60 yds each, 2 have minerals.
I dont care to much about people using minerals, but las week some guy stole 1 of my trailcams and my security rope on my treestand in laguna area and I hate people do that.