Feed in or out of enclosure?

[Pia]

I've always fed my bp in her enclosure because at first I didn't know any different. I have since been told it can make snakes more likely to strike at you when you put your hand in and that you should always feed in a separate container. I've had her for 1 1/2 yrs with no problem but should I change the way I do it? Thanks for any input.