Welcome, I would love to hear of your experience with African bees and why you killed them rather than just re-queening.
Sorry for responding just now, was a little bit occupied :-)
I killed the bees cause in my region the african bee density is to high for requeening. Made a lot of experience, but it is nearly impossible to requeen if there are african hives near the requeening hive.
I killed every day 3 to 7 african princess with their little invading sworms. It is like a horror film, you open a hive and the african bee attacks.
So i decided to kill all my african bees and to buy packet bees (italian). But even this will be difficult, cause from other beekeepers i know it needs 3 years to "clean" your region. With a lot of italian drones the african bees will be change a little bit, and at the end die suffering from hunger, or leave the area.
But it is like war!
Here we have a little forum of beekeepers with european bees. It´s a small group cause officialy it is impossible what we are doing :-) The government tells to public the african bee is the best, produce more honey and never get sick or varroa =:-) Totally crazy, but everybody accept this lie, not everbody, there is a little group of beekeepers who defends this lies ;-)
Thanks and will read/write us!