A drop cloth is one of those items that doesn’t have varying degrees of effectiveness. It either works or it doesn’t. In Matt’s case, it didn’t work. Matt bought a canvas drop cloth from Home Depot. He did this because he was under the impression that a canvas drop cloth would prevent paint from getting on whatever he placed it over. Unfortunately for Matt, the drop cloth was too thin and paint soaked right through, ruining his carpet. Read Matt’s email inside.