So, the effect is quite immediate? It's not something which shows up after a few weeks (paint bursting or spots appearing or rusting or so)?
I just asked because I topped up the brake fluid of my bike and put the flask on top of the car hood. A few drops spilled. I wiped them off but still, they had like a minute or two to do their work and when I wiped it off it didn;t leave any immediate damage. Or not as far as I could see in the dim garage lights... :-/