Oil dry for cat litter. Or cat litter for oil dry? My wife had a kiniption (is that a word?) when I busted out the monster bag of cat litter to soak up some spilled brake fluid in my garage. I used it anyway, I told her brake fluid was like antifreeze, and I better use it otherwise the cat would try to drink it. Really she's good 95% of the time..don't know why she all of a sudden had a hissy fit.