You didn’t here this from me, but one of the best things to use to get popcorn off is to use a garden hose and an adjustable water nozzle such as this one.  A good wand to buy will have an adjustable flow control to restrict the flow of water as well as different spray patterns.  We find that the “mist”  and “vertical” settings work great.

Posted on March 16, 2011 by The Popcorn Removal Advisor