Haven't been on here for a while. Thought I'd check in.
I've used doe estrus scents over the years, with mixed results. Sometimes they work - other times, no reaction. I place scent wicks with several different estrus scents on separate wicks to "smell" like several different does. I place them upwind of my tree stand location, hoping to catch the nose of any passing buck. But it seems to work best from 3rd week of October to around November 10th. Halloween is a prime time to see cruising bucks. Peak time isn't quite here yet, but the bucks are craving a hot doe - that's when I've had best luck with estrus scents. No particular brand of scent over another. I usually put out several different brands.