I realized it was time to clean when I looked down when I was brushing my teeth and noticed that I had left large red splotches on my tile floor. I guess something broke in my sewing room and I cut the side of my foot right after I turned off the lights. I felt a pain, but thought I scraped the side of it. I didn't see the blood on the underside. I guess I wacked it good because it took another fifteen minutes with a rag and spot cleaner getting the blood out of the carpet on the stairs and in the hallway. Today, I cleaned. I didn't want that to happen to one of my kids. It isn't perfect, but at least it isn't dangerous anymore!