Finish the following sentence with the best choice: When cleaning up an oil spill on concrete, what is the best procedure?

Choices:
- Use dog litter to soak up the spill, then dispose of the dirty litter properly.
- Use cat litter to soak up the spill, then dispose of the dirty litter properly.

Answer:
Use cat litter to soak up the spill, then dispose of the dirty litter properly.