Here is a link about killing them with pressure washer,
hot water, and some detergent.
http://www.endtimesreport.com/killing_honeybees.html
http://www.beesource.com/forums/showthread.php?197523-Killing-Africanized-Bees
Not sure if it will work.... Never tried it. It seems reasonable, to saturate them. but a motor powered device might alert them before you have chance to get to them. I was thinking a
CO2 extinguisher to freeze them/ suffocate them. You could cover area with plastic at night, then blast them with the co2. Temp may kill them off and protect honey. After done leave covered to keep co2 in there. But the above link said this did not work for someone.
The second link has some good options, but again the
soap may contaminate honey (if uncapped).
Again I have or tried any of these but I would think temp extremes of heat too. I would not want mess with them though, I would try to kill them off and forget about the honey