Honestly, this is a reloading question...

WD40 works good for me

Baby oil. Just let it soak for a while, it'll lift right off.

Time works. I had a heck of a time getting walmart labels off those clear plastic storage jars. So I just left them, for about 3 years. The other day a corner was starting to lift up and the whole thing was able to be peeled right off. But really, just about any solvent will work. I've used alcohol, wd-40, mineral spirits, goof off. Methl-ethyl-keytone, that one is not so good, dissolves abs plastic. But if you ever have to glue abs together MEK and abs shavings make a great glue. Oh, boy....the ADD is flaring up again. Hey...a squirrel!

I've not taken their labels off specifically but I have had good success with lighter fluid. It soaks into a label and cuts the glue real well.

Gasoline is an amazing solvent.

I normally try heat first, to see if it will loosen it. If not I then go to the solvents. Naptha has worked the best for me. Then diesel has also worked good. Even Ed's Red solvent as worked. I use it a lot of times for the final cleanup. Some times depending on what the outer surface is you need to scratch threw it for the solvent to get to the adhesive. This can be done with a wire brush.

Goo Gone, Citrus oil,
Ordered a bunch of Cabelas brand boxes, had like 3 labels stuck on each one, two types pulled of easy all the third ones were goo gone (or the 99 cent store version of goo gone)

heat, and believe it or not anything oily will soften the adhesive. I've used butter and peanut butter, once you get a corner to lift up - they go pretty quickly, and the oil will remove the rest of the glue, you just put it on and come back 10 miutes later and it will wipe right off.

Just buy another brand of ammo storage containers with cheaper labels.

Pressure washer, then a rag with WD-40 to clean off the sticky.

Here is a neat trick that sometimes works depending on the glue they use.
Begin by peeling as much of the label off that you can with your fingernails.
Try and get all of the label face off to expose the glue and paper under the face of the label.
Take a piece of blue masking tape and cover the label area with it. Leave some tail to hold onto to pull it off.
Now, take your thumbnail and, like a squeegee, rub really hard all over the masking tape to get the tape glue to grip the leftover decal and glue remnants.
Then once that is done pull the tape off. If any glue or decal remain, repeat the process.

This has worked for me on Dillon, MTM and other bullet boxes as well as other plastic items with decals.

When it hasn’t worked I have used WD-40 or 91% Isopropyl Alcohol.

Brake Cleaner, Acetone and Lacquer Thinner will discolor, cloud or destroy most soft plastics.
Guess how I know…


EDIT: auto communista strikes again…