Just wanted to pass on a little story about when I lived in China...
In the mornings before I would put my bread in the toaster, I would always "pre-heat" the toaster by starting it without any bread in it. I would then watch the cockroaches scurry out in a hurry so it was safe to put my bread in (well, safer anyways!). Of course, if all of the cockroaches didn't make it out in time it made for an interesting smell!
So in case you happen to be travelling in China and you happen upon a toaster, you'll know what to do!