Key Scratch Liquid These "special ingredients" are just what you may need in some "special situations". Manufactured under contract by DSG Laboratories to fulfill the occasional unusual operational requirement of CIA and other federal agents, these products are now available for non-governmental sale. Use only with utmost discretion. This stuff has an insatiable appetite for automobile paint. It eats everything it touches, right down to the bare metal. Once it hits bottom, it then starts spreading and devouring even more paint. Use only with extreme discretion.