It's okay to wipe your feet.
Hank just bought a nice new pair of shoes that he's very protective of and is invited into his friend's house.
Hank wants to enter his friend's house.
Hank wipes his shoes on the grass outside and enters the house.
Hank avoids wiping his shoes to preserve the soles and walks inside his friend's house.
Hank avoids tracking any dirt on the floor and enjoys his time with his friend.
Hank tracks dirt and dust into the house and his friend has to clean it up.