[header] How to clean up gasoline [title] Stop the spill at the source. [step] First thing's first-before you get too worried about how to clean a gasoline spill, you'll want keep it from getting any worse. If you've accidentally knocked over a fuel tank or container, return it to an upright position immediately and secure the lid or cap over the opening. 
If the spill originated from a pump, make sure that it's shut off and that the nozzle has been replaced. [substeps] Even a small gasoline spill can quickly become dangerous.