This product is absolutely essential for the person who maintains electrical, electronic, audio, musical instruments. A typical use would be to clean volume and tone controls in amplifiers or audio equipment. Many years ago, when TV sets had rotary tuning controls, "tuner cleaner" spray was used to maintain. That product was marginal in long-term effectiveness and left undesirable residues. DeoxIT is a decendant of "tuner cleaner" with state-of-the art ability to clean and maintain equipment. Thanks to your EPA, it has become extremely expensive.