Does anyone know how to "Clean" the Bags on Mowers? There is a seller here in the Portland area and his used Mowers have bright white Bags. I contacted him and he wouldn't reveal his secret. I tried a pressure washer once and it made the material fuzzy. I'm not sure what he does to clean them but it is amazing. Only thing I found that works very good is "HVAC Coil Cleaner". Good results but expensive when you are trying to make a few buck selling refurbished Mowers. I used the whole Can on a Honda Bag. I currently have 11 Walk-behind Mowers to sell which is nuts.