The cats pretty much vacuum anything up off the floor that's the same size as their food - bugs, lint balls, small pieces of their own poo... I sweep the floor every day but I just can't keep up with the little goats!!
Oh - I have another icky moment, but it's partially my fault. Any other cat mommies with long hair might sympathise. Sometimes one of them will swallow one of my hairs, and poop it out... but it'll get stuck coming out of their bum, so they'll be trailing along this piece of poop by a long hair... it makes me gag.