I know electrical tape is easy to find, but don’t do it. We had electrical tape used on our classroom equipment to hold on IR emitters and block the IR receiver from any other input. Give it a year or so, and the electrical tape will fail, leaving you with a nasty, sticky residue. If you want to block the light…

And so it doesn’t happen again, tuck a pair of these behind the grill. http://www.walmart.com/ip/Auto-Drive-…