this stuff has been on other threads before, here goes.
if you regularly go into the tub/cage for cleaning,inspection,checking the water bowl or to handle the snake,taking pics, etc. it shouldn't be a problem. alot of bp's like to ambush hunt from their hides, and alot spend alot of time in their hides(they feel secure there). try to pre-scent the room/area with the rodents and wait for your snake to get into "feed mode" most of mine eat quickly. some take longer than others, the ones that take longer i feed last. alot of progress can be made by being consistent with your routine, same feeding day,time. same prey,size. and sometimes it takes weeks or months to get it all down smooth. they are individual living animals and each one can/will be different too.

vaughn