Quick side question to understand the problem. Is it about "I go out to the terrace to work and walk in the dirt / fetch firewood around the corner" or about the normal use of the terrace, for example to sit outside, have breakfast or sunbathe? In the first case, put shoes on/off outside and then store them inside. Since this happens relatively rarely, I consider the time required for storing them acceptable and not annoying. In the latter case, I don't understand the problem. Either I am barefoot / in socks (our terraces are sufficiently clean) or the shoes stay on (rarely). How do you handle it when you have guests? All shoes off and left outside?