He is probably talking about the old fashioned liquid filled lighters (Zippo's et al). Every grocery/liquior store will sell Ronson lighter fluid, I use it all the time for de-greasing stuff. Being lighter fluid, it is of course highly flammable, so use at your own risk. And no smoking while using it...

Thanks for the replies everyone. I will try one of the solutions on a small spot and see if there's a melting reaction and if after 20 min nothing happens then I'll use it.

Frankie

Lighter fluid, aka Naptha, is a pretty good solvent on most adhesives, but has some persistent flammability issues that I don't care for around electronics too much. I prefer to use aresols that are specifically made for electronics cleaning, like electro-wash, which are mild freon based solvents that leave no residue, are safe to use on electronic equipment, and won't hurt plastic in the least.

Electro-Wash

It may not be as aggressive at removing/desolving the adhesive, but better to be conservative about such things in my opinion.

Skip the lighter fluid, naptha. It is more aggressive and hazardous than you need it to be.

Common cooking oil will do the job. Apply it sparingly with a cloth rag and rub a bit. You will be surprised how fast it dissolves the stickum. Once the glue is gone wipe the area clean with a paper towel. The only material you don't want to use it on is natural rubber. Almost all modern insulation on wires is PVC, nylon or Kynar. None of these are damaged by the oil. You can use it on painted surfaces but wipe it off well because if it pools or is allowed to stay in quantity it will peel the paint. Brake fluid, essentially glorified vegetable oil, similarly damages paint if it isn't removed.

Naptha will degloss paint and attacks many more plastics. And it is a significant fire hazard around electrical equipment.

Any cooking oil or margarine will work.

All right then, I'll try that first. If it works, my interest in ethnobotany will rise. Thanks.

I've been looking for something to remove the label glue left behind on the plastic bottles used to dispense prescription drugs. I decided to come to the forum to ask for suggestions when a search turned up this topic. Thank you, akabu and Art! Veggie oil is surprisingly quick and effective at removing the glue and I now have a nice clean supply of plastic bottles for use in my kits.