I found that my Swiffer dry mop works like a charm to clean my greenhouse glass: Its long handle allows me to reach the high panes, and its soft-scrub pad is inexpensive and durable. To start, I add a cup of white vinegar and a few drops of dish-washing soap to a bucket of hot water. I submerge the Swiffer into the bucket, swish it around, and start mopping the exterior of my greenhouse. The windows come out sparkling with little effort. I now don’t mind the chore of maintaining maximum sunshine for my plants. Because it’s so effective, I also use it to clean my wood-shop and house windows.
-Lynne Lightowler-Buck, Bainbridge, New York