So are we testing all the answers in this thread. I tried to train 7 flys to let me kill three of them but none of them took off and I killed them all. Turns out four stayed on the table and the other three stuck to the swatter but they all left a certain amount of juice on the table so I don't know what the answer might be.
Once you go cat you never go back!
Nacra 5.2 (Elsies)#1499, running an inter17 spin!