Checked out some colonies I stuck patties on a while back. Some show no evidence of it whatsoever others hardly touched it. Not sure what conclusion to draw, both scenarios seem quite strong. Natural pollen coming in now.
Removed all pollen sub that was remaining this weekend, never had pollen coming in like this in March in 9 years keeping bees. 1st time for everything, I just hope the East winds of death keep away now we are past the equinox.