Not sure I understand you perfectly.
Can you start by giving us the details: quantity you bought, what age they are, etc.
It is really serious when snakes regurge and they can die very quickly if they always regurge. You should read this thread. It contains the FAQ of Kathy Love about regurge.
http://www.cornsnakes.com/forums/showthread.php?t=20965
What is your setup? Temp, humidity, hides, etc.