Fly to Dewford Town. Enter the house directly north of the Pokemon Center called "Dewford Hall." Talk to guy closest to you on your right with the black hair and the glasses. He'll say something about Sludge Bomb and give you the TM.
You can get the Sludge Bomb TM in Route 43 or you can buy Sludge Bomb at the Battle Frontier.
it is TM no. 36
on island 5 in the rocket ware house
inside the rocket warehouse on the fifth island.
it's in Rocket Warehouse on Chrono Island.
In dewford town a house will have a guy with glasses and black hair he will give it to u
somewhere in shoal cave somewhere in shoal cave
Sludge bomb: team rocket HQ (island 5)
in the warehouse at veilstone good luck trainers.
TM36, Sludge Bomb, is given to you by a member of the Dewford Hall (guy with glasses near table) in Dewford Town after you win a few gym battles (4 or 5).
You find the sludge bomb, team rocket HQ on island 5.
NOWHERE.The TM trick is not available as a TM in Pokemon Emerald