Try using good ole coca cola pour some on the spots let sit for awhile and then clean with soapy water you would be amazed at what all the acid in that product will do including desolving a nail.
How to clean brake fluid off garage floor.
How to clean brake fluid stain from floor.
If it does not then there are driveway cleaning products out there.
But a whole lot of water is required to get it all out of porous items such as carpet.
Use a stiff brush and work the cleaner in a circular motion.
Pour the brake cleaner directly onto the stain and let it set for a few minutes.
With regard to kitty litter it works but tends to take a long time.
Brake fluid should wash away with water.
There are times when you drop something onto your garage floor driveway or patio.
Also any of the grease solvents such as the spray on engine degreasers should dissolve brake fluid.
So long story short i stored old brake fluid in the corner of the garage to dispose of when i got the chance to take it to a disposal center but my dad knocked it over when grabbing firewood and we didn t notice until this morning.
Brake fluid is so water soluble that not a lot of soap is needed.