My work uses these for absolutely everything. We use them as floor scrubbers, counter wipers, general cleaning utilities.I asked our store owner where they come from and he said Costco, however my local Costco didnt have them so I cam here. I use them for cleaning brake fluid, grease, acetone, gasoline, oil, paint, water, detailing cars and motorcycles, wiping down monitors and screens, dusting off delicate things. They do it all. Then you just throw in the wash and good as new.