Follow the one step higher common sense than yours.
Recently I saw four girls visiting from Hakata, Kyushu. Noticing their Hakata dialect, a landlady of a tea house asked them where they had come from. She got friends with them right away so that four of them enjoyed conversation with the landlady over bottled juices they bought at the tea house.
When they were leaving, one of the girls asked the landlady gingerly,"Could you throw this bottle away?" Although she asked the landlady as politely as she could, the landlady refused and said curtly,
"Take your trash home with you! It's common sense in Japan."
The girl said sorry to her and went away abashedly and hurriedly. I felt sorry for the girls and hoped they could enjoy sightseeing without being offended.
You cannot find any trash boxes in Fushimi Inari Taisha, especially in Mt. Inari, except for ones in the parking slot. I always take a plastic bag with me to Mt. Inari as a trash bag because I notice that when I started visiting Mt. Inari. Be sure to bring your trash home with you not to end up like the girls above.
KATO