What is the best TH9 strategy to get dark elixir?

There are a number of different strategies to farm dark elixir at Townhall 9. I personally find it quite easy with Giwiwi. I regularly pull 2-3k dark elixir per raid. Mostly though it comes down to personal preference, troop level, and execution, though base level and trophy league do play a part.

If you are a Townhall 9 and not completely rushed, you should be able to climb to at least crystal, and you will have preferably have at least a level 10 king and level 5 queen. Now there are several ways of going about farming dark elixir. You can take some giants and wizards and try to clear out all the defenses around the dark elixir storage, then send in your heroes to pick off the storage, or you can do a full assault on the base and funnel everything toward the dark storage.

To farm dark elixir effectively, you will most likely need to use quite a bit of elixir for each attack (it doesn't really make sense to use dark troops to farm dark elixir), and it is recommended to take spells, as most people keep their dark storage near the middle of their base and well protected. At th9 you have access to a jump spell, which you can use to help path your troops in going through walls. Earthquake spells can do the same, but again if you want to farm dark elixir you should keep your dark elixir spent per raid to a minimum. The only dark elixir I recommend spending is on 2-3 hogs and a poison spell.

When attacking, it is important that you check for clan troops and kill them before sending in your main force, as they can completely destroy your giants/pekkas/etc before they can get in. I recommend using a few hogs to check, then killing them with a poison or luring them out with a few archers to kill in a corner away from the defenses. Before sending in your main force, it is also important to make a "funnel" for your troops. Basically use wizards/minions/archers to clear buildings on the sides of where you want to attack, so you troops will not be distracted by them, and more likely to path inward.

Note: if you are in a higher league, and can sustain being there, the dark elixir from loot bonus after attacking does help quite a bit.

best is goblins knife- **troop combination is 15 giants 9-10 wiz few wall breakers few archers and rest goblins. heal spell and one jump spell. Drop the giant and wizards in the defense path leading to dark storage. As the defense line is cleared send in goblins and use the jump spell. cheap and efficient too. Only problem is if dark storage is surrounded by wiz tower.