I have a double kitchen sink that is clogged. I've removed the disposal and the J traps and tried to snake an auger through both pipes in the wall, they just route out the other side. I can't seem to hit the portion of the pipe that actually drains out. Help?

Try bending the head of the snake a bit and then push it into the drain by hand... hopefully, the bend in the snake will allow the snake to drop into the vertical piping. If you have a dedicated kitchen sink vent you may also be able to go on the roof (if pitch is reasonable) and snake the drain through the vent pipe. If all that fails after numerous attempts, you may need to go rent a hand-held cable machine with a DROP HEAD (see image below) in the kit. That should fix this, for sure!

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Mark

"both pipes in the wall" this sounds odd, can you post a picture of your drains? Normally the two traps join into one pipe outside of the wall. https://www.youtube.com/watch?v=lj8hhuhhIcY