Posted October 3rd, 2007 by Messiah
There are very few trash MOBs in the raid instance. There are three MOBs before the High King Maulgar (a group of 2 and a single) and four pulls of groups before Gruul.You can check out all the general info about the instance and the trash MOBs in this first part of our: Gruul's Lair Guide.
The MOBs are on 1 hour spawn timers. The ones leading to the High Kill will stop spawning once he has been killed. Once Gruul is down no more MOBs will spawn until the instance resets.