How do you get one of those pesky sticker labels off your shirt, hoodie or pants? While the clothing is still wet grab a piece of fresh sticky tape, press it down onto the gummy washed on sticker, leave for a minute or two. Carefully peel off the strip of sticky tape and the gummy sticky stuff should come off on your tape. If this does not get it all off first time, try it again.
This works best if it’s only been washed that first time and the item of clothing is still wet.
Could it work otherwise, possible but I’ve not tried it so can’t confirm.