At home, I'll probably eat it depending where it falls. Unfortunately, the dining room table is on carpet, so I definitely wouldn't eat anything that fell on the carpet just because my dog hangs around there (lol).
There's this saying in my culture that states "big germs eat little germs" - with us being the big germs. So I'm sure I can kill most anything at home with my stomach.
I'm a clean freak. I always say if my floor is not clean enough for me to eat off of it then there is something wrong with the way I'm living. That said, I almost never eat off the floor unless it's something really yummy.
