The first step is to determine what type of marker was used. Permanent markers can be either oil-based or water-based, and you’ll need to know which you’re dealing with when you attempt to remove the ...
Options like rubbing alcohol, vinegar or WD-40 work wonders—just apply to a clean cloth and scrub gently. Let your chosen solution sit for a minute to soften the glue before you start scrubbing.
Sticker residue may be unsightly on plastic, but it's easy to remove. Household products like olive oil and peanut butter can get that gunk right off.