damn, i don't know about that now, but i guess they might.
as to the original question, yes i'd kill them. Unless you are an animal lover and live in a rural area and don't mind to take care of them and then release.
reminds me of my days as a youth.. going to the mall, stopping by the pet store.. picking up a couple rats... and finding the nice convertible with the top down and releasing my newly acquired friends into the wild