It's illegal to feed live for entertainment (sp?) or for any other reason that isn't vital for the snakes health - the greater problem is the age/size ratio as it is also illegal for any shop to provide an unweaned animal ( usually ruled as six weeks old ).
Like Zinc I have always fed F/T exclusively, sometimes that makes it harder to start hatchlings off but I have yet to have one starve itself to death. This is not to say I haven't had to intervene or resort to various techniques to avoid it.
del