Thank you for your response. I have 2 Trident folders and did see debris in both pivot areas. So I'd like to start a maintenance program for my knives like I do for my guns. Saw a U-Tube showing how clean a folder pivot area was after spraying it with Powder Blast (I would put gun oil on it after that.) But Powder Blast warns about damage to plastic and rubber. Amazon reviews talk about certain things melting which tells me it Power Blast is strong stuff. Just weighing risk/reward. Hoped somebody could tell me their experience with using Break Free Powder Blast on a SOG folder with GRN (Glass Reinforced Nylon) handle. Thanks, again