Use your imagination. Kill every member of their families; drop a pig with their name on it on that big green stadium in Mecca from 50,000'; grind up anything left of their bodies along with the remains of a pig and drop it on Mecca.....
You have to fight fire with fire.
If every suicide bomber knew that he would be enshrined with pig entrails and buried with pig guts,their family killed,and other little goodies like financial destruction of every relative they would have a lot harder time getting "volunteers" and the price would skyrocket. It has always worked whenever tried.
It's something that could be started now in the mid east.