I noticed last season, that most of my pleated window shades were starting to look dirty and had lots of black mildew and bug stains on them. Replacing them is expensive.
I found an easy way to have them looking like new.
Remove them, fill a bathtub with about 4″ of HOT water, some laundry detergent and about 2 cups of real liquid bleach. Mix it up well then put the shades in to soak (opened up). I swished them around gently and let them soak for about 45 min with an occasional light agitation.
After a few good rinsings with cold water I dried them in the sun. All the mildew spots are gone. They look like new now and I got a chance to really clean the cabin roof where they attach.
It would be great to know if there is anything I could spray