i have two bp's and i feed them both 2 adult mice every week or soo. maybe week and a half. i would try to feed once larger item but i cannot find anything that is just right. i have looked for other items but around here all i can get are adult mice or adult rats and thats way too big for my snake. i started feed 2 mice when my snake go to be i belive 400 grams or soo. (or was it less?) lol i dont remember.