Excellent material. If you have a small oil spill, even in the water, these things work great. I poured a small amount of oil into a bucket of water just to test and it soaked up the oil without soaking up the water. I still have dry cleaning on hand in case of a major spill, but for most jobs, especially everyday drops, these things are great. They are perforated so if you get a small drop you don't have to use the whole pad. I typically keep half a pad for about a week and reuse it daily only to pick up about a dozen drops of my half leaks in a few hours. Will definitely order a few more if needed.