Use the Kodohide Drum at the Marmot Den. While controlling the Marmot, poison the three kegs in the Bloodmaul Camp. When that is completed, return to Rexxar at Thunderlord Stronghold in the Blade's Edge Mountains.
1x Poison the keg of Green Spot Grog
1x Poison the keg of Ripe Moonshine
1x Poison the keg of Fermented Seed Beer
The ogres, simple as they are, would notice you dispersing this poison throughout their camp. Thus, I will teach you how to enlist the help of one of nature's smallest creatures to do this task.
By playing a simple rhythm on this drum, you can coax a marmot to follow your commands.
There is a den of marmots near the Bloodmaul camp. Once you have a marmot's aid, use it to disperse the poison to the Bloodmaul's kegs.