How do you clean up brake fluid DOT 5 and DOT 4 mixed together?

To clean up a mixture of DOT 5 and DOT 4 brake fluid, first ensure you have proper personal protective equipment, such as gloves and eye protection. Use absorbent materials like rags or spill pads to soak up the fluid, and place them in a sealed container for hazardous waste disposal. Avoid using water, as it can lead to further contamination. Finally, clean the area with a suitable brake cleaner or solvent designed for automotive applications.