Before they even get through the door, consider a good entrance mat in front of your door. It’ll have the obvious benefit of letting people wipe their shoes so that your floors don’t suffer, but it’s also a great chance to have some fun. You can play with different greetings, let people know you love your pets, and it’s an easy switchable item for holidays. As an added bonus for apartment dwellers, it’ll make it a little easier for guests to know which door is yours.