I can't agree more! My Indo's shampoo is always full. Once, I found my bath gel (full bottle) has become half bottle suddenly, then I tried to smell my Indo's bath gel, it has the same perfume of mine!!!!!!!!!! She has been refilling her empty bottle with my shampoo and shower gel! Well, I kept silent because she will pay for all bad things she has done after she is died.
If something is left after dinner, she will throw away without asking me. OR give me the old food in the following day.
Their personal utilities should take care by themselves.
I will give her those I don't like or if I buy too much and cannot use in short time. BUT it's not your responsibility.