How do you get a sister to clean her room?

1 pay her

2 help her

3 buy her something

4 threaten her

5 squirt her with a water gun until she says yes and if she doesnt then squirt her again

6 threaten to tell her biggest secret

7 take her favourite thing and hide it in her room or take it and tell her she wont get it back until she cleans it, either way she will clean it