This article says nothing about drugs. Items reported stolen were a computer, cash, and a gun.
The two things I find noteworthy here:
1) The intruders were waiting in the garage for the family to return, and ambushed them in the garage. Note to those with garages: Have a good locking system on your garage, not just the house; scan for people who might be waiting outside your garage, before you use your garage door opener; scan for people who might be inside the garage, before you actually pull in.
2) They tortured the wife to get the husband's compliance.