This is not normal behaver for Italian bees. When working with a swarm or a highly agressive colony I use sugar water 1 to 1 ratio and a clean spray bottle. Spray a fine mist, helps to calm them down some. and gives them some goody to lick on.
I would still send some, about 50, in a seal tight contanier in regular rubbing alcohol. Of course if you can get "ALL" the queen cells out and requeen with known stock, all the old bees except the drones would be replaced by the new queen this time of year no later than 8 weeks, maybe 6 weeks.