I also try to keep my ball pythons to a limit of small to just barely mediums on a every 5 to 10 feeding schedual.I recently changed from a 5 to 7 day feedings to the 5 to 10,as i was noticeing more waste then being absorbed by my snakes.I was told two years back when i first wanted to breed ball pythons to not let them get to be fatties lol.I am sure if i threw rats in their enclosures on a daily process they would eat them with no problems.I personally would like to see my snakes live along time instead of rolling over dead from overeating .Plus like said allready a healthy snake is a better breeder compared to a overweight snake that will slug out.