Using these methamphetamine detection safety wipes is super easy. First, find the surface you suspect might have methamphetamine, MDMA, or GHB. Then, take a wipe from the pack and gently rub it on that surface. Wait a bit, and if the wipe turns blue/purple, it means the substances are present. Keep the wipes in a cool, dry place to make sure they stay effective. Don't expose them to extreme heat or moisture. Also, remember that these wipes are for testing purposes only. If you get a positive result, follow proper procedures according to your situation.