How to guard against domestic thieves? How can we know?

People who spend a lot of money and like to take advantage of others may be thieves. Usually property is separated, so it is better to separate money from gold ornaments and the like. Personally, I think thieves are relatives, and it's really not worth it if you tear your face because of a little property loss. It's best to educate each other in a unique way at the dinner table-for example, you can discuss some news about the fate of people with stealing habits with your family at the dinner table, and then you can consult the "domestic thief" and let the other person talk about his views, which will better touch him and save him.