Use detection paste in situations where powders and powder aerosols are inappropriate due to air circulation, air moisture content or where target object surface condition prohibits its application. The Sirchie Fluorescent Invisible Detection Paste (Gray/Brilliant Green) is suitable for outdoor applications. It is water-resistant and will remain transferable for prolonged periods of time. It has the consistency of ordinary automobile grease. Apply a thin film on target objects using disposable vinyl or latex gloves. Paste is excellent for use on door knobs, locks, alarm pulls, secure phones and vehicles both indoors and outdoors. Tube packaging allows for controlled application. Use with any Sirchie longwave (UV) light.