Many oil spill kits are highly visible and durable and contain absorbent socks, pads and pillows as well as spill response equipment and other supplies. The absorbents contained in oil spill kits will only absorb oils and oil-based liquids without absorbing any water. Absorbent socks have a small diameter and mould easily to surfaces to surround small spills on floors and catch leaks and drips. They are flexible enough to contain small chemical spills and stop them from spreading, although more than one sock may need to be used to completely surround a spill. Whilst absorbent mats and pillows prove effective at cleaning up an oil spill once it has been contained, they have a large surface area and the filler is fast-working to absorb large amounts of liquid fast. Some oil spill kits will contain disposal bags and ties; allowing you to remove the used absorbents once the spill has been cleaned up.