Leave the litter alone for at least an hour before sweeping or vacuuming it away.
Clean oil stain on concrete driveway.
The four best ways to remove oil stains from concrete are.
If some oil still remains you can repeat the process as many times as needed.
Cleaning oil spots from gravel and crushed stone driveway box of baking soda 1 cup of fine grain kitty litter several drops of liquid soap 1 gallon warm water.
Wash away the oil with a strong detergent and a scrub brush or sponge use a concrete cleaner or degreaserto loosen and remove the oil apply a poultice that will break down the oil and suck it from the concrete.
Using a stiff bristled brush start scrubbing the area.