The custom in Japan is to take your shoes off when you enter a home.
I went to a party at a house in Kyoto on Saturday night. Look at this mess!

土曜日の夜、友達の友達の家にパーティがあって。。。玄関がえらいことになっていた！









...and one box of foot powder!
パウダー一本だけじゃ絶対足りない！