FRidays. always fridays. its laundry day. If my appointments over run the day, it moves to Saturday, but most of the time its Friday. I wash the bath mats, and towels then too (kitchen towels included)
I asked a friend of mine how often she changed hers when I went to visit and the dang things crawled off the bed and wimpered at me. "once a week or so" she said. Yeah, right... RUN AWAY! remind me to bring a sleeping bag if I stay the night.