Removing duct tape residue off a down jacket.

Any advice? I’ve tried rubbing alcohol and it’s very slow. 

Naphtha/white gas/stove fuel works on many adhesive residues. Try to fold the baffle wall so the solvent doesn't contact the down. You could try a citrus-based cleaner, but then you'll probably never get rid of the odor.

Cover it with more duct tape.

I have had good luck with citrus zest on other adhesives. (Just scrape it off an orange or lemon and make a paste.) Seems unlikely to harm the nylon. Never tried it on duct tape, so no idea how fast it will be. 

“Goo Gone” citrus based cleaner

You might also try nail polish remover (acetone) as it smells pretty good. Fresh.

Goo Gone or WD-40 with a toothbrush and water after to rinse off.

Try steam, and scrubbing

Allen Sanderson wrote:

Acetone will damage nylon.

No, it won't. It WILL however destroy acetate fabric (not used AFAIK in outdoor gear).

Heat removes it. But to much heat melts nylon. Maybe an iron on synthetic setting on a piece of paper bag for absorption, like taking old glue off climbing skins?

Gunkiemike wrote:

No, it won't. It WILL however destroy acetate fabric (not used AFAIK in outdoor gear).

Yer right, not sure why I was thinking that. As such, I deleted my post.

Rhino Skin Solutions Repair should do the trick.  

If not white gas, ronsonol lighter fluid is clean and dissolves a lot of residues. Just keep away from flame, spark, else YGD, YMMV etc...

WD-40 will work, as long as you enjoy wearing clothes that stink of WD-40. For whatever it may be worth, I was pawing through my flammables cabinet this morning looking for something else when I came across a can of "3M Adhesive Remover. Citrus based. Solvent-free."