I have house shoes/ slippers, which are like slip-on Birkenstocks. Growing up, my parents didn't mind if we wore outdoor shoes inside. However, my husband, a Czech, grew up having mandatory house shoes, so we continue that at our home. He even had to wear designated indoor shoes at school. I'm used to this custom now. I also had to comply with a similar one when I lived in Asia.

How often do you clean your floors?