How to remove sticker residue from clothing... even those stickers that have gone through the wash! Squeeze Dawn Dish Soap on sticky residue, let sit 10 - 15 minutes, use a butter knife or credit card to gently scrape away all the gummy stuff. If there&#x27;s any remaining residue, heat up your iron (regular, curling iron, flat iron) &amp; put a paper towel in between the shirt and iron for 2 seconds and scratch off with your fingernail. Launder as usual.