In one room of our Florida home (window faces north) we have a bedroom that had not been slept in over a year (dusted and vacuumed regularly.)
Upon closer inspection, we found comforters stored in the closet dotted with orange "polka dots." Upon a closer look, I found the "dots" on the lamp shades and along the baseboards where the two twin beds hug the walls.
I cleaned the fabric items with bleach, water and sunlight, cleaned the woodwork with Soft
scrub with bleach and a scrub pad. I've never had this problem before. What is it, and will it return while the house is closed for the summer/fall? We are snowbirds and have been here seven years and have never experienced this before and it was only in one room!