Using these fentanyl detection wipes is a breeze. First, open the pouch and take out a wipe. Then, apply the wipe to the surface or substance you think might have fentanyl residue. Wait just a few seconds and look for a pink color on the wipe. That means fentanyl or its analogues are present. As for disposal, you can just throw the used wipe in the normal trash, no special treatment needed. Keep the wipes in a cool, dry place to maintain their effectiveness. If you have any concerns about using them, don't hesitate to ask for professional advice.