You can always get one of
these! The best way, it to reduce the grease going on the ground by scraping and wiping it down first. Buy some grease absorbers that they use for spills to contain the area and immediately pour kitty litter on the ground after you wash, shovel up the kitty litter and properly dispose it.
Most car washes are required to have grease traps and secondary drains. They filter their water and separate the grease.
