I had determined to make or buy myself a simple reusable Swiffer cover, as mentioned the other day, and who should appear at my house at lunch time today but Ingrid, bearing the gift of this nifty knitted version! Those little bump things are knitted right in, and squish down into the little bite-y things on the Swiffer. I tried it in the bathroom this evening, and it's great! I also had the thought that you could also dampen it if you wanted to do a light mopping. Thanks, Ingrid!