Many vehicles have a fair amount of reflective hardware behind the grill. I am curious what can be done to reduce the amount of IR that is reflected back to a laser gun from these shiny components. Since aesthetics don't matter, what is the best thing to coat/paint/do to this hardware to reduce its reflectivity? The photo shows a bright aluminum tube right behind my lower grill, and other surfaces that are not radiators. I won't mess with the object further back that has cooling fins. Aluminum is highly reflective. How can I reduce the reflection? It's doesn't have to be pretty or allow visible light to pass while still blocking IR. The finish can be rough or smooth. The only thing that matters is it has to be effective at killing the reflectivity. This is not about finding an effective anti-reflective IR strategy for license plates or chrome trim (neither of which I have anyway), or headlights and other exterior car and truck parts that have to look nice after the treatment is applied. It's about the ugly "hidden" hardware. Every little bit helps. Any ideas?