I've only used Code Blue - Sow in Heat Urine two times. 2 days after spraying 1/4 bottle on a rotting log, the boar below came out shortly after dark. This particular boar weighed 270lbs and had not been seen on our trial camera in 8 months. Was it the urine? Who can know for certain, but it does seem coincidental.
The 2nd occasion seemed to have no affect on the pigs already coming to the feeder. No new boars were photographed at the site of spraying.
I do plan to test it out a third time at a new location.