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Too early for doe estrus scent(I never use it, even during 'prime time'. In most cases, it will attract young deer). As far as smelling goes, 100 yds. on a shitty day.
McKee Beshers during gun season is a pumpkin patch. Bow season is tolerable. Gun season is a whole different matter.
I know it still depends on how the wind blows and hiking I've seen deer catch my scent without noticing me otherwise and taking off. At the same time I've seen deer catch the scent of things like smoke at >100yds with the wind blowing it towards them and with favorable wind not noticing a person's smell till well under that. I am sure I've probably alerted deer with my smell without ever realizing it and probably sometimes they get close and are on edge, but not taking off yet because they smell me.
I just figure SOME kind of scent control is a good idea. IE avoiding things like smoking, really smelly stuff (like not using strong deodorant, strong smelling soap, laundry detergent, not eating a thousand garlic, etc). I don't really buy in to the notion of "total control". I guess I've seen too much of scent control and tracking dogs not being effected at all. Though I guess it could still be the difference between a deer noticing you at 100yds vs 75yds, but it seems like a ton of effort for me when in most cases I am going to be sweating by the time I am in position for a sit, or still hunting, etc. Dunno, I guess my opinion is a bit contradictory.
I've been wondering about McKee. More about duck/goose possibilities.