I agree the two Cambodian refugees should be persuaded to share our scruples. After all, to paraphrase Mark Twain, we would only be adhering to that great American principle that nothing needs reforming so much as other people's habits.
The Cambodian methods are inefficient. They kill only one dog and have to do the deed themselves. We Americans, on the other hand, have them killed by the thousands in institutions where we can comfortably ignore their whimpers.