I will assume you mean reverse okeetee right cause oaktrees certainly do not eat pinkies, lol. Just kidding by the way. For the first few feeding most advise halfing a frozen pinkie lengthwise, thawing in a baggie placed in warm/hot water for 30 minutes and then yes feeding in a separate container to avoid ingesting any substrate from your cage. Good luck and no handling for 3 days to avoid a regurge.