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…