The best way to remove a bumper sticker at home is to get a plastic scraper and if the weather where you are is not in the 80s or better a hair dryer or heat gun. If in the 80s pick an edge and using the scraper lift and gently peel the sticker off if you see the paint starting to lift heat the surface of the sticker then peel further while keeping the surface hot. After removing the sticker use a product like Goof Off or Goo Gone to remove the adhesive residue.

Well the best way to remove any stickers / decals is using a hairdryer to activate the glue and it will come off real easy and you dont need to pay for any product.

Maybe some alcohol after removed for cleaning some adhesive residue and the result will be perfect.

Hope i helped.

Best regards,

Luis

try a product called Goo-Gone.

hair dryer and rubbing alcohol

try soaking it with rubbing alcohol that usually takes the gummy adhesive off well. but like a lot of manufacturers warn consumer to test a little area first just in case it f**** up your paint.then find the person who keyed your car let them knows that you know they did it. Where as now you are entitled to ***** slap the perp! ;)>