So all of you guys claiming to never have problems with male flowers on female plants are spraying hormones? How can you do that and claim so and so is a great breeder? The breeder may be honest and a great person but as Zooty said, having that many new "strains" year in and year out is not the same as working a line down and creating a new strain. The breeder is pollen chucking using clone only's and reversing. If you have to spray hormone to have "zero problems" you have a problem. Thats why you sprayed the hormone!
I've never used feminizer, never had a problem with any fem beans except the Nep Jam as previously stated... I do however use stock from breeders that select and do not just chuck pollen about.